search for: companding

Displaying 20 results from an estimated 50 matches for "companding".

2010 Jan 18
0
TDM2400P "Unable to set SW Companding on channel .."
...ink up device peth0 entered promiscuous mode xenbr0: topology change detected, propagating xenbr0: port 2(peth0) entering forwarding state wctdm24xxp0: Missed interrupt. Increasing latency to 4 ms in order to compensate. virbr0: no IPv6 routers present eth0: no IPv6 routers present Unable to set SW Companding on channel 6 (reason 4) Unable to set SW Companding on channel 6 (reason 4) Unable to set SW Companding on channel 6 (reason 4) Unable to set SW Companding on channel 6 (reason 4) Unable to set SW Companding on channel 6 (reason 4) Unable to set SW Companding on channel 6 (reason 4) Unable to set S...
2004 May 29
1
prerelease of the Postfish
.... Multi band compander: The Postfish multi-band compander is similar to the single-band compander above, and provides all of the same controls with an addition: each over/under threshold is configurable by full-octave, half-octave or third-octave bands, for up to 30 bands of independent companding for each of 32 input channels and the group of eight outputs. The multi-band compander includes a global 'mid' compand slider, like the single-band compander. This slider acquires a new use in multi-band mode however, where it can flatten or expand the dynamic range of an entire...
2004 May 29
1
prerelease of the Postfish
.... Multi band compander: The Postfish multi-band compander is similar to the single-band compander above, and provides all of the same controls with an addition: each over/under threshold is configurable by full-octave, half-octave or third-octave bands, for up to 30 bands of independent companding for each of 32 input channels and the group of eight outputs. The multi-band compander includes a global 'mid' compand slider, like the single-band compander. This slider acquires a new use in multi-band mode however, where it can flatten or expand the dynamic range of an entire...
2016 Feb 10
0
ezstream question
On Tue, 9 Feb 2016, Larry Turnbull wrote: > One of the streams is an old time radio stream and I use ezstream to run the > prerecorded shows. > > Is there a package or some sort of way I can apply dynamic compression to > the stream? Ezstream really isn't designed for this. It's primarily meant for streaming files as they are, which is a very light-weight operation, with
2016 Feb 09
4
ezstream question
Hi all: I am managing a radio station that has 7 streams. I am using icecast, ices and ezstream on the streams and overall it is working pretty well. One of the streams is an old time radio stream and I use ezstream to run the prerecorded shows. The streams are 128K mp3 streams. Also this station is running on a VPS using Ubuntu 14.04. My question: Is there a package or some sort of
2010 Jun 25
1
Non-native codecs - MELPe?
Has anyone needed a coded that Asterisk does not natively support, such as MELPe or CVSD? If so, did you find a pure software solution and provided that as an addition to Asterisk? Was that solution successful? Has using an I/F card with a DSP proved to be the better solutions? We are beginners with Asterisk so any help/advice on how to best implement non-native Codecs into Asterisk will be
2010 Sep 03
0
[draft] DAHDI-linux & DAHDI-tools 2.4.0 Release Announcement
...event loss of convergence when signal levels go over a certain threshold and for handling line condition changes. * wctdm24xxp: Fix race conditions/improvements in FXS line feed register handling. (Closes issues #17724 and #17764. Reported and patched by alecdavis) * wctdm24xxp: Added "companding" module parameter to replace "alawoverride". When BRI modules are installed on a Hx8 board alaw is the default companding so change the semantics to just allow the companding to be forced as opposed to overriding a default. The default is "auto" which means alaw i...
2010 Sep 03
0
[draft] DAHDI-linux & DAHDI-tools 2.4.0 Release Announcement
...event loss of convergence when signal levels go over a certain threshold and for handling line condition changes. * wctdm24xxp: Fix race conditions/improvements in FXS line feed register handling. (Closes issues #17724 and #17764. Reported and patched by alecdavis) * wctdm24xxp: Added "companding" module parameter to replace "alawoverride". When BRI modules are installed on a Hx8 board alaw is the default companding so change the semantics to just allow the companding to be forced as opposed to overriding a default. The default is "auto" which means alaw i...
2016 Feb 10
2
ezstream question
Thanks Geoff, I will give it a try. I am reencoding all files to a 128K mp3, 44100 sample rate stereo stream for consistency. So yes I have the decode and encode lines in the xml file as you outlined. I will check out sox and see how it does. I am also exploring mp3gain to run across the entire library and see if getting all files to the same level will help. Larry -----Original
2011 Jul 19
0
Using line spectral pairs for LPC quantization
Dear Stefan, In the paper "Improved Forward-Adaptive Prediction for MPEG-4 Audio Lossless Coding", a non-linear compander is applied to the parcor coefficients prior to quantization. This compander is designed in order to minimize quantization error, especially for magnitudes close to unity. If you determine the typical distribution of magnitudes of the LPC coefficients, you could
2007 Jan 24
0
NewTopic - Asterisk and Cisco AS5300 via E1/PRI
Hi, I had previously posted about connecting an AS5300 to * via SIP/H323. I got it to work via SIP, but only 1 call at a time would work, and if a user from the * side hung up, the cisco would'nt catch the hangup. I an now trying to hook up to the cisco via E1, with a Sangoma A101 card in my * box. I would like it such that I call from * via E1/PRI to the cisco, and call out via R2 to
2006 Jan 24
1
E1 -> T1 native bridging for fax, will it work?
Hi list! The stability of * with fax (or the lack of it) is causing me headaches. To solve it, I was thinking to put a TE205P card in the * box, connect the E1 pri on one port and a channelbank (I was thinking of the Rhino) on the other port in T1 mode. (Has anyone tried this??) The TE205P supports channel bridging which sounded like the ideal (but not cheap) solution when combined with a
2004 Jan 16
1
Asterisk Integration with Lucent Definity g3si
...um card hooked up directly without csu to a TN464 DS1 interface card. With alot of experimentation it connects (With some timing sync issues) with the following settings on the DS1: Bit rate: 1.544 line coding: ami-basic line compensation: 1 framing mode: d4 signalling mode: robbed bit Interface companding: mulaw idle code: 11111111 slip detect: n near-end CSU type: other We then set up a trunk group, but I believe because of the limitations of the card/setup we can only use group type: co which limits us to outbound on the trunk, or inbound to 1 mapped extension, no DID or more advanced switching....
2005 Aug 29
1
Previewing oggvorbis files in GNOME...
Hi. I'm wondering if anyone out there can give me a little help trying to figure something out: I presently am running CentOS4.1 with GNOME as my desktop (It runs quite well, I must say!). I just have a little curiosity: I have a few audio files (.wav, .mp3 and .ogg) and I like to "preview" them. When run my mouse over the .wav files (and mp3 files) the
2010 Mar 23
5
G.711a or G.711u ???
Dear all, I have an Asterisk SIP server in a LAN environment and I want your opinion in order to decide the use of an audio codec: What audio codec is better, G.711a or G.711u ??? Which suites to my LAN voip calls ??? Thank you !!! Alejandro -------------- next part -------------- An HTML attachment was scrubbed... URL:
2004 Aug 06
0
Re: Preprocessing and Echo Cancellation Notes.
> 1) AGC: This seems to work pretty well in all cases. I had previously > hacked-in the "compander" filter from sox for a similar effect. What > I've noticed is that speex_preprocess's AGC has no "knobs", and it > seems to use an attack/decay that is a lot faster than what I had > chosen from the sox compander, but it works pretty well nonetheless.
2011 Sep 13
1
sox: Failed reading obd-demo.mp3: Do not understand format type: mp3
Hi, Can someone please comment about the below issue [root at host0040 kaushal]# file obd-demo.mp3 obd-demo.mp3: MPEG ADTS, layer III, v1, 256 kBits, 44.1 kHz, Monaural [root at host0040 kaushal]# sox obd-demo.mp3 -e stat sox: Failed reading obd-demo.mp3: Do not understand format type: mp3 [root at host0040 kaushal]# sox -V obd-demo.mp3 -r 8000 -c 1 -t ul -w vm-intro.ulaw sox: Failed reading
2004 Aug 06
2
Preprocessing and Echo Cancellation Notes.
First, I'd just like to thank the Speex community, and Jean-Marc especially, for their great work. I'm developing a VoIP library (which uses IAX, the asterisk protocol) as the network protocol. I've been putting off integrating Speex for a while, as things have been working pretty well so far with GSM. (for those interested, the code is at iaxclient.sourceforge.net). However,
2010 Mar 26
4
Xiph.Org releases libao 1.0.0, libVorbis 1.3.1, and vorbis-tools 1.4.0
Xiph.Org announces the release of libao-1.0.0, libvorbis-1.3.1 and vorbis-tools-1.4.0. This is a coordinated update of the audio libraries and tools to deploy improved surround-sound support across the libraries and toolchain. libao improvements: - AO returned to active development - Added surround channel mapping API and capability - Updated all drivers on modern installs - New config file
2010 Mar 26
4
Xiph.Org releases libao 1.0.0, libVorbis 1.3.1, and vorbis-tools 1.4.0
Xiph.Org announces the release of libao-1.0.0, libvorbis-1.3.1 and vorbis-tools-1.4.0. This is a coordinated update of the audio libraries and tools to deploy improved surround-sound support across the libraries and toolchain. libao improvements: - AO returned to active development - Added surround channel mapping API and capability - Updated all drivers on modern installs - New config file