search for: 31kbps

...at 8 KHz] bitrate is arround 30KBPS, including UDP,RTP headers. This is OK for me and I get good quality audio. Problem is, if call is made from a HIGH END machine [like P4 3.2 GHz with good soundcard] to a LOW END machine [like P3 550 MHz], high end pc sends at more bitrate than as usual [arround 31Kbps].And apparently low end PC receives this HIGH bitrate. So, slow end PC receives audio packets at arround 8100 Hz but it is confiured for 8000 Hz. So there are overflows in the directsound buffer at receiver end at periodic interval [in my case after every 30 sec], than I flush the buffer which mak...

...PS, including UDP,RTP headers. This is OK for > me and I get good quality audio. > > Problem is, if call is made from a HIGH END machine [like > P4 3.2 GHz with good soundcard] to a LOW END machine [like P3 550 > MHz], high end pc sends at more bitrate than as usual [arround > 31Kbps].And apparently low end PC receives this HIGH bitrate. > > So, slow end PC receives audio packets at arround 8100 Hz but it is > confiured for 8000 Hz. So there are overflows in the directsound > buffer at receiver end at periodic interval [in my case after every 30 > sec], than...

Hi! Playing with Opus 1.3 I converted a tone sweep with a sample rate of 96kHz (just for fun). Before I had converted that from WAV to FLAC, and to Vorbis without problems. With Opus I noticed that the file size for 48kHz and 48 kbps compared to 96kHz Vorbis at 31kbps is about double the size and it sounds even worse (than Vorbis) (there is a lot of noise in the lower frequencies when a low frequency tone is being played). Here is what opusinfo outputs: Processing file "D:\Work\Ulrich\Musik\Vega\Opus\Audacity\Test-Sweeps\02 Sweep (0 -20kHz at 96kHz) log.op...

...at 8 KHz] bitrate is arround 30KBPS, including UDP,RTP headers. This is OK for me and I get good quality audio. Problem is, if call is made from a HIGH END machine [like P4 3.2 GHz with good soundcard] to a LOW END machine [like P3 550 MHz], high end pc sends at more bitrate than as usual [arround 31Kbps].And apparently low end PC receives this HIGH bitrate. So, slow end PC receives audio packets at arround 8100 Hz but it is confiured for 8000 Hz. So there are overflows in the directsound buffer at receiver end at periodic interval [in my case after every 30 sec], than I flush the buffer which mak...

I have a modem on a port of a channel bank dialing out a FXO port to the PSTN. It wont train at any speed. If I put another modem on a another port of the channel bank, it will connect to it, but at @31Kb. Anybody try this and have it work ?

...and I get good quality audio. > > > > Problem is, if call is made from a HIGH END > machine > [like > > P4 3.2 GHz with good soundcard] to a LOW END > machine > [like P3 550 > > MHz], high end pc sends at more bitrate than as > usual > [arround > > 31Kbps].And apparently low end PC receives this > HIGH > bitrate. > > > > So, slow end PC receives audio packets at arround > 8100 > Hz but it is > > confiured for 8000 Hz. So there are overflows in > the > directsound > > buffer at receiver end at periodic int...

...312Hz, 35s=625Hz, 40s=1.25kHz, 45s=2.5kHz, 50s=5kHz, 55s=10kHz, 60s=20kHz so it seems the frequency rises logarithmically.) $ sox -c 1 -r 96k -b 16 -n /tmp/sweep.wav synth 60 sin create 1-20 gain -3 > With Opus I noticed that the file size for 48kHz and 48 kbps > compared to 96kHz Vorbis at 31kbps is about double the size Your opusenc line says "--bitrate 56 --vbr", so where does the 48 come from? Anyway: $ flac sweep.wav $ oggenc sweep.wav $ opusenc sweep.wav sweep.opus $ ls -l sweep.* -rw-r--r-- 1 hans wheel 2635692 Nov 1 08:49 sweep.flac -rw-r--r-- 1 hans wheel 2151...

...312Hz, 35s=625Hz, 40s=1.25kHz, 45s=2.5kHz, 50s=5kHz, 55s=10kHz, 60s=20kHz so it seems the frequency rises logarithmically.) $ sox -c 1 -r 96k -b 16 -n /tmp/sweep.wav synth 60 sin create 1-20 gain -3 > With Opus I noticed that the file size for 48kHz and 48 kbps > compared to 96kHz Vorbis at 31kbps is about double the size Your opusenc line says "--bitrate 56 --vbr", so where does the 48 come from? Anyway: $ flac sweep.wav $ oggenc sweep.wav $ opusenc sweep.wav sweep.opus $ ls -l sweep.* -rw-r--r-- 1 hans wheel 2635692 Nov 1 08:49 sweep.flac -rw-r--r-- 1 hans wheel 2151...

...frequency rises logarithmically.) >> >> >> >> $ sox ‑c 1 ‑r 96k ‑b 16 ‑n /tmp/sweep.wav synth 60 sin create 1‑20 gain ‑3 >> >> >> >> > With Opus I noticed that the file size for 48kHz and 48 kbps >> >> > compared to 96kHz Vorbis at 31kbps is about double the size >> >> >> >> Your opusenc line says "‑‑bitrate 56 ‑‑vbr", >> >> so where does the 48 come from? >> >> >> >> Anyway: >> >> >> >> $ flac sweep.wav >> >> $ oggenc sweep....