Archive for the ‘Hi-Fi & Music’ Category

TapPicture This – Blondie

15 Aug 2010 17:13 by Rick

…ends with the lines

One and One is what I’m telling you
Get a pocket computer
Try to do what ya used to do, yeah.

That seems a bit advanced for 1978?

TapEarworms

23 Jul 2010 12:13 by Rick

This has nothing to do with worms and less to do with ears than you might expect. What they are is the snatches of music that keep buzzing around inside your head, sometimes for hours at a time. It is a well known phenomenon that most people suffer from at some time and it is well known that advertisers exploit it in the little musical logos that they push repeatedly. Short little snatches that you immediately associate with the product like Intel or McDonalds. But to be a true earworm they have to keep coming back to you involuntarily and, fortunately, I don’t get that problem, possibly because I hear very little advertising—TV or radio.

My earworms, and I get a lot, are longer pieces of music, even whole songs and they are most irritating when I can’t remember the words. The current one in my head is a pop song by Mika and I don’t know the title (until I had to look it up—”Love Today”) or even the words; just the tune and the feel of it. They are tunes that we would call “catchy” but that may be a circular definition—catchy because they stick in your brain and vice versa.

According to the Guardian, the No. 1 on the earworm charts is Kylie Minogue, “Can’t Get You Out of My Head” (were they serious?) but not one I have ever had because it is not a song I know well enough. Part of my problem is I have a very wide musical taste that spans 50 or more years of pop music and a not insignificant amount classical and jazz. What will tomorrows earworm be—I can’t predict that. It could be triggered by something I hear, not necessarily the tune itself but something that brings it to mind. It could be a tune I have heard recently or not (knowingly) for 20 years. I know some things that bring one on instantly. Determinedly walking any distance instantly brings on “Onward Christian Soldiers” because that is the pace that I march at. Is there a cure; for me putting on some more music usually clears it temporarily and, when it comes back it will usually be a different song. Not that I want to give the impression that they are a problem. The only time I am irritated by them is when I can’t remember the rest of the tune or the words. I got stuck on Paul Simon’s “Me And Julio Down By The Schoolyard” yesterday because I caught a snatch on Radio Bristol.

There is a research project at Goldsmiths College into finding more about them. I discovered this from Quentin Cooper’s Material World program on Radio 4—now he is a person with chronic earworms as you can tell by his feature links. Anyway, they are doing a survey; do fill it in and help them.

Tapmetaguru

30 Jan 2010 12:40 by Rick

…with a nod to Marc Bolan for the name.

When looking at problems I was having with the tagging of MP3 files recently, I had the need for something that would unambiguously tell me exactly what tags were in a file and to verify that they were changed when I thought they should be. Although there are a lot of music library programs out there I needed something that would tell it as it was and never attempt to change anything.

So I wrote this program; and very big it turned out to be. Meta data in music files is much more complex than I expected.

Like all my stuff it is a command line program, so no fancy graphical interface and, at the moment, it is only compiled for Intel Macs. I know that it does work on Sun Sparc Solaris and have no doubt that it will on Windows/DOS if I still had the compiler. It is probably good for other platforms too and the source code is supplied for you to port if you want to try. The output is quite voluminous, particularly if verbose mode is specified so be prepared to wade through a lot of information.

Since I first wrote it, it has extended in scope and now reports…

  • mp3—
    • ID3v1 & v1.1 TAG structure.
    • TAG+ extensions (not tested).
    • ID3v2.3 and 2.4 frames.
    • APE keys [from v1.1].
    • LYRICS3 blocks v1 & v2 (not tested).
    • embedded JPEG images.
  • wma—
    • ASF v1 objects.
    • some ASF v2 objects when discovered.
  • FLAC native files (not ogg containers yet) [v1.2]
  • jpg—
    • JFIF markers.
    • Exif markers.
    • SOF0 markers.

I would like to go to other formats if I can get the information, particularly Apple & OGG sound files and GIF & PNG graphics files. I will be adding basic disk file meta data such as permissions and creation & modification dates pretty soon, though I have a feeling that this will be less portable.

I have created a static support page for the program which includes download links and full instructions on how to run it. In a later posting I will be reporting on some of the things I discovered by using it.

Updated: 23 Feb 2010 to v1.2

TapSonos from Scratch

2 Jan 2010 15:46 by Rick

Perhaps you have seen a Sonos system in someone’s house or you have seen it in hi-fi shops or on the internet and fancy one yourself. The advertising says you can get it going with one click (or is it two?) and it really is that easy but like any new acquisition it is worth doing a little planning first.

I will assume that you have an existing hi-fi system, a collection of CDs (music on Vinyl and Tape is beyond the scope of this article), a computer (Windows or Mac, desktop or laptop) and a broadband connection (this is essential) but not necessarily a wireless network. I will NOT assume that you are an iPod/portable MP3 player user—if you are then it can be easier (or can be harder!) This is written for a UK audience but most parts will be applicable elsewhere. Before we start, lets talk about budget. Over a complete system you need to allow about £500 per room. The first ones will be a little dearer and money can be saved by using existing components such as loud-speakers but it won’t alter the bottom line by a lot.

The first thing to decide is where you want to listen to music. There is no problem in starting small and expanding later but it can be cost effective to do two rooms at a time. In the room where the hi-fi sits you will need a ZP90 (ZonePlayer) connected to a spare input on your amplifier or receiver with the cables provided. These sockets could be marked Aux, AV (or even Radio or Video) but Phono inputs are not suitable. For rooms with no existing hi-fi then a ZP120 which has a built in amplifier can be used with a pair of loudspeakers and cable. Expect to spend £100–£200 for a pair of speakers as you will want decent ones, and try listening to some before buying as these affect the perceived quality more than anything else. I have no experience of the Sonos own-brand speakers. For less critical environments such as the kitchen, cheaper speakers can be used or the new Sonos S5 system which is semi-portable and has built in speakers (it only needs a mains power connection.)

One of the Sonos units must be hard wired to your broadband router! If you want music near where this is located you can use a standard ZonePlayer and connect that. If not then a cheaper option is to use a ZoneBridge (ZB100) which just makes the necessary network connection. All the equipment, except loudspeakers, can be hidden away in cupboards so long as they have adequate ventilation. In exceptional houses (very thick walls, large floor area or more than two stories) then you will need to carefully consider the siting of the equipment. A good rule of thumb is to make sure that each device is within 10m horizontally or 3m vertically from another one towards the direction of the hard-wired component. People with pre-wired houses have tried putting all the ZonePlayers in one cupboard but this can make it difficult to get a good signal on the wireless controllers.

You control the system to select the music to play using the hand held wireless controllers. You will probably need at least one. Each controller has a charging station (thankfully now included in the box) where it sits ready to be used. We have a three story house so keep one on each level. In addition there is a free computer desktop controller (PC or Mac) which it is worth installing as it makes system maintenance easier, but you probably won’t want to use it for day to day operation. There is also a well advertised controller application for the iPhone/iPod Touch. This requires you to have a (separate) wi-fi wireless system on your home network (the 3G Internet on the iPhone is not an alternative) and can be a cheaper substitute for the portable controller (free if you already have the device) but does have drawbacks e.g. it takes a while to wake up. Note that the Sonos system does NOT play the music that is on your iPod.

This has all been straight forward so far but now we come to the stuff they don’t talk about in the adverts. Sonos is well designed for non-technical users but here we need to get a little bit geeky so it runs smoothly long-term. Primarily, the Sonos plays music from digital storage i.e. Computer hard drives. The easiest and cheapest option is to use the music library facilities on your home computer—Windows Media Player on a PC or iTunes on a Mac. However this does have significant drawbacks, the most obvious of which is that the computer needs to be switched on to play any music. Home computers are not designed to be on all day, every day. They are not reliable enough, there are security implications and the power consumption can be considerable.

A better alternative is to use a NAS (Network Attached Storage) device. This is not a Music Server or anything fancy, just a box with hard drives attached to your network. It is designed to be on all the time and usually has power saving features to go into a standby mode when not in use. Talk to your supplier to find a suitable device – in technical language you want one that does SMB file sharing. I use the Netgear ReadyNas Duo which has two hard drives that mirror each other—i.e. they have identical copies of the same data so that if one fails you don’t lose anything. This guards against most failures except theft—if that is an issue or you have irreplaceable material then I would suggest a separate secured or offline backup system – discuss this with an expert. The NAS device wires to your router in the same way that your computer and the first Sonos system, with a Network cable.

What file format should you use? The four well known alternatives are WMA (Windows Media Audio), m4a (Apple format), FLAC (Lossless) and MP3. Sonos will play any of them but the first two can limit your future choice of other devices such as portable players. Purists like the lossless format but I can never hear the difference and they are supported by fewer systems so I would suggest using the MP3 format as it is very flexible. All the formats (except FLAC) can be recorded at different bit-rates; the higher the bit-rate the better the quality. As disk space is relatively cheap then go for the highest available. It used to be that people used lower bit-rates for portable devices but even these have massive capacity now so there is no need to compromise. There are two other formats you may have considered; WAV is supported by Sonos but it it is very wasteful of disk space for no benefit over other lossless formats and m4p files are the old Apple copyright protected files – they won’t play on Sonos and need to be converted to the liberated version (for a fee). There are other more obscure formats but if you need these then ask an expert.

How much storage space are you going to need? As a guide, my library has 10,000 tracks and takes up 70GB of storage using the highest quality MP3 files. The Sonos is limited to 65,000 tracks so I will never need more than 0.5TB. I bought 1TB drives because they were good value and I also use the space for PC backups. Using a lossless format I would need about three times the space.

To get the music off your CDs and onto the NAS (called “ripping”) you will need some software . This can be the same software that manages your library i.e. keeps all the information such as titles, artists correct. These programs also do things like a music jukebox but you won’t be using these facilities. If you have a Windows PC then I do NOT recommend using Windows Media Player. I have found that it has a mind of its own arbitrarily changing things that you have previously set. It has a time lag putting some operations into the background so unless you have it on a lot, some things never get done. The final nail in the coffin was that it always leaves a small gap between tracks even if there isn’t one on the CD. I have found the free MediaMonkey is a good alternative which does exactly what you tell it to. If you are a Mac user then people successfully use iTunes. It has some of the same problems as WMP, particularly with cover-art but I don’t know of a good alternative. There are available some separate and specialised CD rippers which are independent of the library managers—examples are Exact Audio Copy (EAC) for PC and Max (for Mac). These go to extraordinary lengths to guarantee that the copy you get is identical to what was on the CD. Whatever you use, take some time to get to know your program and discover how to set the recording format and quality.

When it comes to indexing your music, Sonos only takes account of six of the tags, as the information fields are called: (Album) Artist, Contributing Artist, Album (Title), Track (Name), Genre & Composer (these may have different names in your library software). All others are ignored and the last two are only used for indexing. It makes everything easier to find if you are consistent in using these—a task that is quite a challenge for the classical music lover and one that I haven’t yet completely solved.

Now you are all set but where should you buy it from? There is very little discounting for Sonos equipment so for cost it makes very little difference. You can buy direct from Sonos and it can be cheaper to get one of the bundles which include two ZonePlayers and a Controller. There are specialist online suppliers such as Simply Sonos who do a wider range of packages and deals. If you need to talk about loudspeakers and perhaps listen to some then many quality high-street hi-fi shops stock the range. I do not recommend buying the stuff on eBay unless you know exactly what you are doing. Some of it, even if new, is sourced from other countries and may have warranty implications.

Finally, sit back and listen. It will transform your music experience like it has mine.

TapThe Record Industry is Hurting

16 Nov 2009 13:33 by Rick

When you hear the frequent reports in the last few years about how file sharing has killed the music industry it all looks rather grim for the artists. This is particularly noticeable when major artists like Metallica and Lily Allen make the case rather than just the industry associations bleating about it. But are they mistaken and just puppets of the record companies; certainly in the early days of their contract their position must seemed rather precarious, subject to the whims of the promoter and woe betide them if they stepped out of line.

On the other hand there have been many critics of the record industry, such as Roger McGuinn, who have said that it is an unfair game often leaving the artists with nothing at all or in debt. As Lily points out, it is the band that pays for the studio, production, video, marketing and promotion and they have to refund this back to the record company out of their 15% of the royalties (if they are lucky). The advance they get is just to keep them alive.

This recent analysis by Times Labs shows that the majority of income for an artist is live performance (and I think it applies for the smaller venues as well as the stadium shows) and that has been steadily increasing even over the period supposedly hit by illegal downloading. As you will have seen from the Lily Allen article, some major artists believe that downloads often serve as tasters—samplers for the artist’s work—and that real income comes from later business. I don’t begrudge the artists any of this. An artist on tour works incredibly hard often at the cost of their health and relationships. I’m still glad I turned down the offer to do it some years ago.

I am not condoning pirating, particularly not wholesale music file sharing, but for sampling it does no more harm than a radio show. That it why I am very pleased that services like LastFM and Spotify allow it to be done legitimately. I have had reasonable success with my efforts to “Go Straight” which I did because I felt that I had rather overstayed my sampler welcome, by nearly 40 years in some cases, and the records I had recorded were often the best ones even though I had made some amends by buying follow up albums. Of course, by now, my efforts are more often benefiting the charity shops as they are mostly out of production.

I would certainly be sad if CDs disappeared off the shelves and everything went to iTunes and other commercial downloads, as I like something tangible for my money and convertable to other formats but I can see that the whole industry needs a shake up even if the record companies can’t.

TapCD Singles

30 Sep 2009 16:19 by Rick

Yesterday I bought a CD Single. Fortunately is was from a charity shop and I paid 50p for it. I would have been a bit miffed if I had paid £4.89 as it contained ONE TRACK of 3 minutes 54 seconds. So that got me thinking about who buys CD singles now if they are such poor value and what makes up the UK Singles Chart that is published every week. I went to the Official UK Charts Company to investigate the last question and it seems, not unreasonably, that downloads are now included in the sales figures. I could have bought the same track as a download from Amazon for 69p. But it is still not clear what counts as a single because I can go to one of the download sites such as Amazon or iTunes and download any song from any album. Does that then automatically count as a single and could it potentially make the charts. This seems very democratic putting the control on what tracks are taken from albums to make singles firmly in the hands of the consumer though, no doubt, heavily influenced by the radio station play lists.

TapUI Fail

30 Jul 2009 13:19 by Rick

I have been puzzled why the battery on my MP3 player is sometimes inexplicably flat and at other times goes on for ages without a recharge. Now I have solved it.

The Samsung YP-T10 doesn’t have a off switch; it times out after a certain period of inactivity which is adjustable in the system preferences. When playing music files, I stop (actually pause) the song using the centre touch button and that counts as inactivity. However, when using the FM radio, the centre button is a MUTE—so I have been leaving it on for days at a time, hence it is flat when I come back to it. The only way to stop the radio is to back up to the root menu using the top left touch button. This activity doesn’t stop ordinary music playing at all.

TapAudio Routing in MacOS X 10.5 (Leopard)

26 Jul 2009 22:08 by Rick

This is a short tutorial on how the audio system works in MacOS X and how to get the best out of it.

If you are a basic user of sound, such as listening to iTunes, streamed music from the internet and perhaps the Skype telephone system then you will have found that it all works straight out of the box. What you will be using can be shown like this…

Simple Audio Routing

This shows the program in the centre and on each side are the audio selectors for default input and output shown as rotary switches to indicate that only one can be selected at a time. Simple programs always take input from ‘Default In’ and send output to ‘Default Out’. Obviously playback-only programs will only use the output side but others, like Skype, may use an input microphone as well. Depending on the model of your Mac you will have different inputs and outputs available. My experience is with a Mac Pro and I have on the input side ‘Line In’ (Analogue) and ‘Digital In’ (I don’t seem to have a Mic socket which I always thought was a bit odd). On the Output side I have ‘Line Out’ (Analogue), ‘Digital Out’, ‘Internal Speakers’ and ‘Headphones’. I have bought a USB desk microphone so that adds to the input options.

The selector switches allow you to control what channel is assigned to the default input and output and this is done using the Sound panel in System Preferences as you would expect. On some devices (the analogue ones) you also have a volume control and a mute which are shown as variable pots and the analogue stereo output ones will have pan controls. Digital channels have fixed volumes and pan.

So, if for example, you have connected your desktop speakers to the ‘Line Out’ socket then you would switch ‘Default Output” to “Line Out’ and everything will be fine. Quite honestly, I find the Preferences panel confusing, especially the volume controls. If you are regularly switching things around then a useful accessory to get is SoundSource from Rogue Amoeba. This puts a control up on the menu bar which does the same as the System Preferences (and more) in a more convenient and intuitive form. For instance you can assign ‘System Sounds’ such as the bings and bonks issued by programs to a separate output—I send mine to the ‘Internal Speakers’ out of the way.

In all of this, ‘Headphones’ is a special case. They don’t appear in the System Preferences until you plug them in. What can be convenient is that when you plug them in they mute the other outputs—this is controllable in SoundSource but not anywhere else that I know of.

Monitoring

Moving on to more sophisticated programs, some like to control their input and output sources for themselves and bypass the ‘Default Input’ and ‘Default Output’. Skype is like this and allows you to select which microphone you would like to use (if you have more than one). Another little gadget I find useful is LineIn also by Rogue Amoeba. This is a very simple applications, best run automatically at login time, which simply routes input through to output with no modification except a mute button. Not only is this handy for monitoring the input sources if your recorder doesn’t do this, but is also useful just for listening to an external source on your Mac speakers.

Recording

Now if you want to record audio on your mac there are a number of applications that will do it. There is the quite sophisticated Garage Band from Apple and also the freeware Audacity which offers a lot of facilities and plugins. Using the diagram below you can see how to take an input signal, monitor it, record it and subsequently play it back. I use a Windows application called WaveCorrector which has state of the art click removal facilities. To get it to work here I run it under Crossover for Mac which works really well. The Crossover Windows interface only provides basic default input and output channels so I use SoundSource for routing. It does come with a monitoring facility but I prefer to use LineIn because it is there before I start setting up the recorder.

Audio Routing with LineIn for Monitoring

But what if what you want to record is sound that is generated on the computer itself—for instance a streaming radio station via the web browser? There is no way to get the output of, say, Safari, to the input of your recorder. Here another little gadget comes to the rescue…

SoundFlower

This little application from Cycling74, despite its daft name, does just what is required: but this is where it starts getting a little tricky to remember how to set it up. We will only be using the 2ch option—I think if you are into multi track recording then you are probably beyond this tutorial. Let’s start with a diagram…

Audio Routing with SoundFlower

Tracking it through from the top you can see that the browser outputs to ‘Default Output”. We have routed this through to SoundFlower using SoundSource. Now SoundFlower does its magic and sends it around to the front again. We set the ‘Default Input” to SoundFlower using SoundSource again and there it is ready to go into the recorder. No sound comes out of the speakers because we have intercepted it so we could use LineIn as before to do the monitoring but SoundFlower comes with its own tool called SoundFlowerBed. This is another application which you run at Login (it can be found in /Applications/Soundflower/Soundflowerbed) and sits on the menu bar as a little flower. You use this (shown as SFB on the diagram) to say where (else) you would like to route the SoundFlower signal to, so we set it to ‘Line Out’ so we can listen to it on the speakers.

Putting it all together

My main audio activities on the Mac are

  1. Listening to external source (LineIn)
  2. Recording them (add in WaveCorrector)
  3. Listening to Internet sources (Native)
  4. Recording them (add in SoundFlower)

To achieve this conveniently the settings I use are

Default Output = SoundFlower.
System Output = ‘Internal Speakers’
LineIn input = ‘Line In’ (actually ‘Digital In because my feed is digital)
LineIn output = ‘Line Out’
SoundFlowerBed = ‘Line Out’

This copes with 1. (output goes via LineIn) and 3. (Output goes to SoundFlower then ‘Line Out’ via SoundFlowerBed), Skype ringing goes to the internal speakers.

For recording I set “Default Input’ to ‘Line in’ (actually ‘Digital In’ in my case) for external sources (2.) and SoundFlower for internal sources (4.). Just one switch to change!

Finally a few cautions. I have found that some recording programs, including mine, like to have the routing set up before you start them up. They ignore any changes afterwards. Secondly be very careful with monitoring options. If used rashly then you can set up a feedback loop and make horrible loud noises. Lastly, if you want to record vinyl records via the ‘Line In’ socket then you will need a device called a “Phono Pre-Amplifier” to boost the signal and also provide some tonal correction. Even though there is this extra complication, a good old fashioned turntable gives much better quality than the USB-ready plastic turntables you can buy these days.

TapSpotify

13 Apr 2009 08:12 by Rick

Some friends are raving about Spotify which is a bit like Last.fm, a streaming music service, but with more choice and control at the expense of the occasional audio advertisement or a subscription.

It is rumours only at the moment but it looks like Sonos my provide a Spotify linkup. If that happens than I stand a better chance of using it as that is where all my music listening happens now days. Dave is even trying to persuade me to put one in the bathroom!

On the downside, the critics rightly say that we have seen it all before and a free music service is not viable business plan. We have seen Pandora come and went, Sirius/XM and Last.fm are struggling and Napster go subscription only. Perhaps Sonos should let it pass and concentrate on something more tangible.

TapiTunes-DRM=(not quite) freedom

14 Jan 2009 10:43 by Rick

When Apple announced that it was no longer going to include Digital Rights Management on songs downloaded from the iTunes store, it all looked rosy—but there is a hidden catch. The AAC (.m4a) files still have your iTunes account id embedded in them so it can still be determined who bought them. That is unless you can find a way to edit the file to remove this information. Mediamonkey says it can edit AAC tags but I don’t know if it includes this one.