source file: mills2.txt Date: Sun, 19 Jan 1997 13:12:39 -0800 Subject: Re: digest 961, topic 1 - .AU and .WAV files From: Mark Nowitzky Hi Gary, In Tuning Digest 961, topic 1, you wrote: > I hear say that ".AU" files, which I THINK is a file format that Sun >invented, are (losslessly) compressed. Anybody know if helper apps for .AU >files are common, or does pretty much everybody use .WAV in web pages? I was looking for an application to convert .WAV files to .AU myself. It seems like .AU works better with web browsers, but I don't know how to create .AU files from my Windows-based system. > Also, I heard from a not-so-authoritative authority that .WAV files >encode ONLY the raw audio data, and do NOT encode sample size, sample rate, >nor number of channels. Anybody know if that's true? The "Sound Recorder" accessory supplied with Windows (SOUNDREC.EXE) provides no way to specify properties such as sample rate, nor does it let you view what the properties are for a given file. ".WAV" files DO contain info such as sample rate, though. I just ran some tests to verify this, using an accessory supplied with my sound card (Audio Recorder by ESS Technology). It allowed me to specify sampling rates from 5.5 kHz to 44 kHz. Windows' accessory appears to record everything as 16 bit samples at 22 kHz Mono, but is capable of playing the other formats. Received: from ns.ezh.nl [137.174.112.59] by vbv40.ezh.nl with SMTP-OpenVMS via TCP/IP; Mon, 20 Jan 1997 20:16 +0100 Received: by ns.ezh.nl; (5.65v3.2/1.3/10May95) id AA08084; Sat, 18 Jan 1997 16:01:27 +0100 Received: from eartha.mills.edu by ns (smtpxd); id XA08103 Received: from by eartha.mills.edu via SMTP (940816.SGI.8.6.9/930416.SGI) for id HAA01887; Sat, 18 Jan 1997 07:01:24 -0800 Date: Sat, 18 Jan 1997 07:01:24 -0800 Message-Id: <199701180958_MC1-E81-51FD@compuserve.com> Errors-To: madole@mills.edu Reply-To: tuning@eartha.mills.edu Originator: tuning@eartha.mills.edu Sender: tuning@eartha.mills.edu