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Ultra Low Bitrates (REALLY!), 22khz Mono at 16kbps
Freya
post Mar 15 2012, 10:55
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I'm encoding at around 16kbps/24kbps in Mono at 22khz. I'm trying to achieve something like FM radio quality.
Sometimes I get close...

I've tried lame VBR with maxbitrate and more recently have tried ABR but I'm not sure the VBR wasn't better?

Does anyone have any tips on how I can improve my encodes in Lame? Should I add a highpass filter? What do others think of ABR vs VBR? I know ABR is recommended for low bitrates...

I know this is really far away from the usual Lame stuff but I hope people might be able to help a bit anyway!

love

Freya
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DonP
post Mar 15 2012, 15:36
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QUOTE (Freya @ Mar 15 2012, 05:55) *
I'm encoding at around 16kbps/24kbps in Mono at 22khz. I'm trying to achieve something like FM radio quality.
Sometimes I get close...


The lame web site recommends 16 khz and LP filter for 24 kbps. Best way to beat the swirlies is narrowing the passband that lame has to encode.
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Posts in this topic
- Freya   Ultra Low Bitrates (REALLY!)   Mar 15 2012, 10:55
- - Fedot L   QUOTE (Freya @ Mar 15 2012, 10:55) I...   Mar 15 2012, 11:36
|- - Freya   QUOTE (Fedot L @ Mar 15 2012, 10:36) QUOT...   Mar 15 2012, 11:52
|- - Porcus   For really low bitrates, you might want to check o...   Mar 15 2012, 12:07
- - KMD   If you just want to reduce the quality dont use an...   Mar 15 2012, 12:30
|- - Freya   QUOTE (KMD @ Mar 15 2012, 11:30) If you j...   Mar 15 2012, 12:47
- - forart.eu   You have to consider Stereo Tool too for mono down...   Mar 15 2012, 14:18
|- - Freya   QUOTE (forart.eu @ Mar 15 2012, 13:18) Yo...   Mar 15 2012, 15:47
- - onkl   If it doesn't need to be MP3, you should give ...   Mar 15 2012, 15:16
- - DonP   QUOTE (Freya @ Mar 15 2012, 05:55) I...   Mar 15 2012, 15:36
|- - Freya   QUOTE (DonP @ Mar 15 2012, 14:36) QUOTE (...   Mar 15 2012, 16:00
|- - DonP   QUOTE (Freya @ Mar 15 2012, 11:00) [ I...   Mar 15 2012, 16:07
- - LithosZA   QUOTE In fact it also needs to be linux and gstrea...   Mar 15 2012, 15:43
- - LithosZA   A few speech codecs that you could try: speex amrn...   Mar 15 2012, 16:01
- - Remedial Sound   Have you tried "--abr 16 -mm." with the ...   Mar 15 2012, 16:01
|- - IgorC   QUOTE (Remedial Sound @ Mar 15 2012, 12:0...   Mar 15 2012, 16:18
- - AndyH-ha   I've done many audiobooks with this. It isn...   Mar 15 2012, 20:54
- - birdie   I'd also suggest HE-AAC or even Skype's SI...   Mar 15 2012, 23:26
|- - NullC   QUOTE (birdie @ Mar 15 2012, 15:26) I...   Mar 16 2012, 04:04
- - Fedot L   QUOTE (Freya @ Mar 15 2012, 11:52) QUOTE ...   Mar 16 2012, 14:28


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