Typical signal to noise ratio of ADPCM |
Typical signal to noise ratio of ADPCM |
 Jan 28 2013, 15:08
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#1
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Group: Members Posts: 84 Joined: 14-December 12 Member No.: 105171  |
So, I have decided to return to this forum (despite my little conflict with greynol) and I have kind of a weird question. I would like to know what is the rough SNR of a 4-bit ADPCM recording (IMA and Microsoft). For those curious why I am asking this, well, I like ripping music and sound effects from old games, and I would like know the technical side as well.
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Jan 29 2013, 06:07
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#2
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 Group: Admin Posts: 4219 Joined: 15-December 02 Member No.: 4082 |
Cool, game soundtrack ripping for the win. I may be able to calculate those parameters for codecs like that, but I guess it really depends on the average error of the encoders used in the first place... which would require that you either have the original encoders handy, or the original uncompressed audio for comparison.
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Neuron Typical signal to noise ratio of ADPCM Jan 28 2013, 15:08
saratoga There are various adpcm flavors. Which are you usi... Jan 28 2013, 16:56
Neuron QUOTE (saratoga @ Jan 28 2013, 16:56) The... Jan 28 2013, 20:16 Garf CompAudio from AFsp can calculate this, IIRC. But ... Jan 28 2013, 17:51 Woodinville QUOTE (Garf @ Jan 28 2013, 08:51) CompAud... Jan 31 2013, 08:30 Neuron QUOTE (kode54 @ Jan 29 2013, 06:07) Cool,... Jan 29 2013, 11:54 Neuron QUOTE (kode54 @ Jan 29 2013, 06:07) Cool,... Jan 29 2013, 16:47 Neuron Here it is:http://www.hydrogenaudio.org/forums/ind... Jan 29 2013, 12:46 saratoga If you have the lossless and lossy encoded files y... Jan 29 2013, 17:37 Neuron I have to admit I don't really know how to do ... Jan 29 2013, 22:42 Neuron I've added the song in 44 Khz MS ADPCM to the ... Jan 29 2013, 23:15 bandpass QUOTE (Neuron @ Jan 29 2013, 22:15) MS AD... Jan 30 2013, 08:46 Woodinville QUOTE (Neuron @ Jan 29 2013, 13:42) I hav... Jan 31 2013, 08:33 extrabigmehdi Well, I used the normalize function of soundforge ... Jan 30 2013, 00:08 Neuron QUOTE (extrabigmehdi @ Jan 30 2013, 00:08... Jan 30 2013, 11:29 extrabigmehdi QUOTE (Neuron @ Jan 30 2013, 10:29) Thank... Jan 30 2013, 13:48 Neuron Thank you, but what does "signal: -19 db... Jan 30 2013, 14:14 db1989 QUOTE (Neuron @ Jan 30 2013, 13:14) ADPCM... Jan 30 2013, 15:29 extrabigmehdi QUOTE (Neuron @ Jan 30 2013, 13:14) Thank... Jan 30 2013, 15:49 Neuron QUOTE (extrabigmehdi @ Jan 30 2013, 15:49... Jan 30 2013, 16:07 Neuron QUOTE (extrabigmehdi @ Jan 30 2013, 15:49... Jan 30 2013, 16:13 pdq The "dynamic range" of mp3 is actually q... Jan 30 2013, 15:24 Neuron I did an Audacity convert to mono + match both vol... Jan 30 2013, 16:00 extrabigmehdi QUOTE (Neuron @ Jan 30 2013, 15:00) I got... Jan 30 2013, 17:03 Neuron QUOTE (extrabigmehdi @ Jan 30 2013, 17:03... Jan 30 2013, 21:04 saratoga QUOTE (Neuron @ Jan 30 2013, 10:00) I did... Jan 30 2013, 18:20 Neuron QUOTE (saratoga @ Jan 30 2013, 18:20) So ... Jan 30 2013, 21:24 saratoga QUOTE (Neuron @ Jan 30 2013, 15:24) QUOTE... Jan 31 2013, 01:44 Neuron QUOTE (saratoga @ Jan 31 2013, 01:44) QUO... Jan 31 2013, 13:44 Neuron That is true, but it does not explain why the ADPC... Jan 30 2013, 21:10 |
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Lo-Fi Version | Time is now: 24th May 2013 - 03:06 |
