Wednesday, June 21, 2017

again gentlemen...again and again...fucking NATO ! what about link 11, what is all about?

http://www.signalogic.com/index.pl?page=codec_samples

SEE ALSO FOR RESEARCH : Reciprocal mode saw correlator method and apparatus 
US 5355389 A https://encrypted.google.com/patents/US5355389
Below are a variety of "before and after" .wav file samples for different LBR (low bit rate) speech (voice) codecs, including MELP, GSM, and G.729A/B, with bit rates ranging from 600 bps to 13000 bps. Click on the .wav file links to hear the samples. All .wav files are mono, sampled at 8 kHz.
Speech samples are at left, with different codec types across (columns). Each row is a different language or sample type, such as addition of background noise. In several cases, a language sample may include both male and female speakers.
Underneath each sample is given the PESQ score, which is a numerical algorithm comparison between the original sample and the processed sample designed to closely approximate a MOS score. 4.5 is a perfect PESQ score, meaning there was no degradation of the processed sample from the original sample. PESQ scores normally refer to the "Original" sample at far left column, unless otherwise indicated. More information on PESQ is given below.

Speech Codec Samples

Numbers given in () below the codec type are inherent algorithm frame size (delay) values, given in msec.
  
        
Original Sample
Fs = 8 kHz
(128000 bps)
MELP²
2400 bps
(22.5 msec)
MELPe
2400 bps
(22.5 msec)
MELPe
1200 bps
(67.5 msec)
MELPe-Plus
2400 bps
(22.5 msec)
MELPe-Plus
2700 bps
(20 msec)
MELPe-Plus
4000 bps
(20 msec)
MELPe-Plus17
600 bps
(30 msec)
G.729A
8000 bps
(10 msec)
GSM³
13000 bps
(20 msec)
MELPe
2400 + AT&T NPP4
G.729A
8000 bps
+ AT&T NPP
GSM
13000 bps
+AT&T NPP
CVSD
13000 bps
+AT&T NPP
G726
13000 bps
+AT&T NPP
Language & Score
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
Female
 
English1eng2_meng2_f            male600female600          eng_meng_feng_meng_f
(ITU) PESQ Score4.54.5            2.6732.293              
 
English2eng_meng_feng_m1eng_f1eng_m2eng_f2eng_m3eng_f3eng_m4eng_f4eng_m5eng_f5eng_m6eng_f6  eng_m7eng_f7  eng_m9eng_f9eng_m10eng_f10      
(ITU) PESQ1Score4.54.52.6662.4452.862.5832.4132.3232.9232.7042.9582.7343.2663.078  3.5703.265  2.5832.4343.2543.076      
 
Frenchf_mf_ff_m1f_f1f_m2f_f2f_m3f_f3f_m4f_f4f_m5f_f5f_m6f_f6  f_m7f_f7  f_m9f_f9f_m10f_f10  f_mf_ff_mf_f
(ITU) PESQ Score4.54.52.4012.5492.4822.5752.2492.3652.7862.7562.7702.8293.1623.243  3.3493.352  2.4822.5993.3433.315      
 
German                              
(ITU) PESQ Score                              
 
Japanese                              
(ITU) PESQ Score                              
 
Chinesech_mch_fch_m1ch_f1ch_m2ch_f2ch_m3ch_f3ch_m4ch_f4ch_m5ch_f5ch_m6ch_f6  ch_m7ch_f7  ch_m9ch_f9ch_m10ch_f10      
(ITU) PESQ Score4.54.52.7812.5723.0802.7692.7382.4773.1202.7393.1242.8093.4903.164  3.7303.601  2.9692.6413.5483.462      
 
NSA test
vector5		nsa_mnsa_fnsa_m1nsa_f1nsa_m2nsa_f2nsa_m3nsa_f3nsa_m4nsa_f4nsa_m5nsa_f5nsa_m6nsa_f6nsa_m600nsa_f600nsa_m7nsa_f7  nsa_m9nsa_f9nsa_m10nsa_f10      
(ITU) PESQ Score4.54.53.1852.9633.2703.0632.9762.7613.3313.0293.3302.9633.6373.4512.6942.2753.8823.901  3.1972.9883.8653.659      
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