Hi all!
I would like to discuss GSM speech compressing using Lame Dll engine.
I'm using described setting, is there anyone who could produce better
result for GSM speech, please?
Better result = (better sound quality with same bitrate) or (same
quality & lower bitrate)
Thank You!!!
Lame_enc configuration options:
==========================================================
version =0
Layer =3
mode =Mono
Input sample rate =8.0 kHz
Output sample rate =8.0 kHz
bitrate =16 kbps
Vbr Min bitrate =16 kbps
Vbr Max bitrate =16 kbps
Quality Setting =2
Low pass frequency =4000
Low pass width =-1
High pass frequency =0
High pass width =-1
No Short Blocks =0
de-emphasis =0
private flag =1
copyright flag =1
original flag =1
CRC =on
Fast mode =enabled
Force mid/side stereo =disabled
Padding Type =0
Disable Resorvoir =1
VBR =enabled, VBR_q =0, VBR method =vbr_mtrh
Write VBR Header =No
Strict ISO Encoding =No
Delphi source:
--------------
BE_CONFIG.dwConfig := 256;
with BE_CONFIG.Format.LHV1 do
begin
dwStructVersion := 1;
dwStructSize := SizeOf(BE_CONFIG);
dwSampleRate := 8000;
dwReSampleRate := 0;
nMode := 3;
dwBitrate := 16; //?
dwMaxBitrate := 16; //?
nPreset := -1; //?
dwMpegVersion := 0;
dwPsyModel := 0;
dwEmphasis := 0;
bPrivate := True;
bCRC := True;
bCopyright := True;
bOriginal := True;
bWriteVBRHeader := False;
bEnableVBR := True; //?
nVBRQuality := 0;
dwVbrAbr_bps := 16; //?
nVbrMethod := 2; //?
bNoRes := True;
bStrictIso := False;
end;
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