Anyway to burn more than 80 mins of audio on a CD?

[vinnyv07]

Hello. Just wondering , is there a tool that compresses audio besides mp3 that will let you put more than 80 mins of music on a cd? I know about overburning but I was just wondering if there was something for audio like some of the tools that there are in TMPGENC for audio and video, which let you put more than 100 mins on one 80 min cd without buring.

[flaninacupboard]

well if you want to play it in a pc the options are endless, if it's a dvd player, you still have quite a few options, but if it's just a standard cd player then all you can do is buy 99minute CD-rs and overburn. sorry

[geek rock]

there is a way to do it, but i wouldn't really recommend it. what you do is put everything in either the left or right channel, and adjust the balance on your stereo system so you can only hear one channel or the other. obviously if you set it to play back both channels at once you'll hear both audio streams.

but this way you can get 160 minutes of audio on a disc. i'd imagine it would be ideal for long speech-based radio shows or something like that..

[EddyH]

Well now... let's see.

First of all, there's some ancient, deprecated mode in the CD standards that let you set it to "4-speaker". Quite how that works I don't know, but I would suppose it's similar to long-play DAT/DV, reducing the bit resolution and sampling frequency. You could convert all your sound to that standard, then get an old junk player and try converting it to use the 4 speaker standard, and use a variant of the twin-mono method above. But you'd be just as well to use 2-hour audio tape really, or a long play minidisc

Next up, if you have a fancy CD player or a CD-DJ deck with alterable speed, you could - for example - resample all your music to 32khz (which will sound similar to the 16khz cutoff of the 'average' mp3), reset the speed to the ol' 44.1khz, and burn - you'll fit about 110 minutes on an 80m disc. It'll sound all squeaky and about 1/3 too fast on most players, like playing an LP at 45, but if you set the CD-DJ to 72.5% speed, you've just made yourself the shiny digital equivalent of an oldskool 7" EP.
(I used this method, at 30khz, to archive a two hour radio show on an audio disc, to be re-ripped and set back to the normal speed when needed.. FM round here cuts at 15khz (no)thanks to it being piped off of DAB..)

A slightly off the wall, but occasionally used method would be to make a nonstandard VCD video stream with a very low CBR video bitrate, loooong P/B-heavy GOP, and a simple still pic (eg artist/track name) and a high as possible (352, 448, 480kbit?) mp2 audio encoding rate with a good encoder, burn it as (x)VCD, and hope that any DVD player or portable VCD/CDDA player you come across doesn't choke on it. That gives you probably 100 to 225 minutes playtime depending on what quality you use and what the players will happily accept.

Or for the hardcore, you could use a bit of software hacking and retro programming, to repurpose a playstation, or better a PSOne for portability, and use their XA audio modes, which sample at about 37.8khz for some bizarre reason, which comes to 93 minutes on a CDR80 in my book in PCM mode, or 100 if you can overburn to 85-86m (or 388, 400 minutes in ADPCM - but then you may as well use mp3).

So in short, no easy way. Sorry. Just get some 90/99 minute discs if you're desperate, or buy a cheap mp3/cd player and record all of your stuff at 320kbits in LAME for maximum quality - that'll still give you a good 275 minutes on a 650mb disc. Or a tape walkman, LP minidisc, DAT, or those shiny new Sony ATRAC-compatible Discmans. If they got a 198k mode on those babies (minidisc LP2 bitrate x 1.5), or even full minidisc rate, then you're laughing.


(( Seriously, if anyone CAN come up with a way to make it work, then be a dear and post - it'd be a very cool thing to know ))

[solarfox]

I rather suspect what he's hoping for, though, is something that will let him get more than 80 minutes onto a CD and still have it playable as a standard audio CD in a standard audio-CD player.

If so, then there's really only one answer:

No -- short of overburning, and/or using those 90/99-minute blanks, there is no way to do it. The Red Book standard for CD-Audio is fixed at uncompressed (i.e. .WAV-like) audio data consisting of 16-bit audio samples at a 44.1KHz sample rate. There is no provision whatsoever for variable sample rates or bit sizes, nor for any form of data compression.

Aside to EddyH -- the "4-speaker" mode you speak of, if I recall correctly, was abandoned along with Quadraphonic, and used basically the same encoding scheme. It didn't actually have four independant data streams, one for each speaker; rather, the front and rear channels were SQ-matrix encoded the same way that the old Quad LP's and 8-tracks were, and the presence or absence of the "mode" indicator was just a signal that would let the player (or more likely, the amplifier) turn the SQ matrix decoder on or off automatically.

[EddyH]

Ah, so like Dolby Surround/Prologic then.. that answers a question thats been humming round my brain for a while

[vinnyv07]

Thanks alot for the responses. Thats what i wanted to do...put more than 80 mins of audio on a 80 min cd without overburning , so it could play in a car stereo. I was wondering because I know you can fit 100 mins plus on one 80 mincd of video and audio when you use KVCD in Tmpgenc. I'll just buy that cheap mp3 player and go with that. Thanks everyone.

[Bilal]

I know you can speed up the songs a little using cooledit and then it'll fit more, but i never knew you can do these stuff.

[indolikaa]

Ah, so like Dolby Surround/Prologic then.. that answers a question thats been humming round my brain for a while

Actually own a CD encoded with Dolby Surround, called Fireworks for Orchestra. Sweet!