similar to: openssl-dev, libtool, shared vs static

Hello. Me again. Have you tried to encode piano solo? Noticed high bitrate Opus gave? And there's also artefact at 15kHz which wasn't in the original audio. Visible with Spek program. Download FLAC and Opus both files, new link: http://www.filedropper.com/example_3 FLAC full: 1084 kbps; FLAC solo: 465 kbps. with --bitrate 160: Opus full: 158 kbps; Opus solo: 190 kbps. Included also Spek

help compiling Opus! i'm stuck at opusfile. configure says i don't have openssl package installed but Debian 9.4 thinks i do. this Debian only have Opus 1.2-alpha2 package, so i need to compile Opus by myself. seems even Debian developers having trouble compiling latest versions of Opus, what chances do i have to succeed? -------------- next part -------------- An HTML attachment was

tracked down the spectogram atrefact source; it comes from the resampler. so it's not really a bug, just a nuisance. let's hope in the future Opus will be able to save bitrate on simple audio parts as all other lossy and lossless codecs do. i think opus decreasing bitrate only when it thinks that audio is too complex for human to hear difference. that's a bad attitude.

using iTunes i've noticed that AAC is very good at re-encoding own lossy sound. let's test Opus! neroaacenc.exe -q 0.75 -if 000.wav -of 001.m4a neroaacdec.exe -if 001.m4a -of aac001.wav wavdiff.exe 000.wav aac001.wav Comparing 000.wav - aac001.wav... Max diff: -17.3867dB RMS diff: -33.0851dB Mean diff: -32.4582dB opusenc.exe --bitrate 512 "000.wav" 001.opus opusdec.exe 001.opus

On Fri, Nov 16, 2018 at 7:40 PM ongaku zettai <sergeinakamoto at gmail.com> wrote: > Hello. > i have over 30GB of Opus music and noticed that > solo instrumentals and solo vocals uses more bitrate > than full-mixes. > Here's example where Opus 1.3 used 190 kbps for > piano solo and 159 kbps for full-mix. > (--bitrate 160 --music) > Download example piano solo

Hi Andrew, I suspect that the configure option should be enable-ambisonics (instead of enable_ambisonics), but for each of opus, libopusenc, opusfile and opus-tools git repos (on master branch), when I try "./configure --enable-ambisonics", I get this error message: configure: WARNING: unrecognized options: --enable-ambisonics Thanks for your help. Marc Le 19-12-18 à 11 h 52, Andrew

Good morning. I've ran a test against MP3 format. Code: (first convert tested audio file to 16 bit 48khz with sox.exe if needed) lame.exe -b 320 48khzfilein.wav -o fileout.mp3 lame --decode fileout.mp3 -o fileout.mp3.wav opusenc.exe --bitrate 320 48khzfilein.wav fileout.opus opusdec.exe fileout.opus fileout.opus.wav wavdiff.exe 48khzfilein.wav fileout.mp3.wav -diff fileout.mp3.delta.wav

I compiled the latest (git master) of opus, libopusenc, opusfile and opus-tools: $ opusenc --version opusenc opus-tools 0.2-8-g4976421 (using libopus 1.3.1-4-gad8fe90d) I tried to encode a 3rd order Ambisonics wav file with the standard Ambix (ACN-SN3D) format; opusinfo is reporting : Streams: 16, Coupled: 0     Channel Mapping Family: 255 Map: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,

Unfortunately, ambisonics aren't exposed in opusenc yet, thus the trouble. They're an API-only feature, but it's a good time to discuss what such a command-line interface would look like, notably: how to specify multiple streams & stream order, select the mapping family, coupled channels, and how to specify the matrix (for family 3). Likewise, there's no multistream support at

Friendly ping for the opus-tools patch... ---------- Forwarded message --------- From: Drew Allen <bitllama at google.com> Date: Mon, Mar 19, 2018 at 2:53 PM Subject: Re: [PATCH] Support for Ambisonics To: opus at xiph.org <opus at xiph.org> On Mon, Mar 19, 2018 at 11:52 AM Drew Allen <bitllama at google.com> wrote: > Hello all, > > Sorry for the delay (got really

Since the opusenc and opusinfo changes were independent I split them up and landed the opusinfo changes (with updated mapping family numbers). - Mark On Thu, Sep 6, 2018 at 4:22 AM, Mark Harris <mark.hsj at gmail.com> wrote: > Hi Drew, > > Sorry for the delay. > > FYI the patch that you attached is not your latest version. This > thread that you replied to is an older

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

Hi, Dear alls I had encounted a problem in using opus-tool-0.2-opus-1.3(download from www.opus-codec.org, Win64 binaries: opus-tools-0.2-win64.zip). First, I use opusenc to generate a opus file which input is a 9-channels wav file. The opusenc can work. Then, I use opusdec to transform the generated opus file to wav file, but opusdec can't work. I received the error message: failed to open

On Aug 07 08:30:31, hans at stare.cz wrote: > On Aug 07 00:41:52, petrparizek2000 at yahoo.com wrote: > > ????#1. To test encoding at low bitrates, I encoded a sine sweep at 12 kbps > > with Opusenc and then decoded the resulting file with Opusdec. > 1) Opusenc --bitrate 12 --downmix-mono Sweep50.wav Sweep50.opus Why are you using a stereo file containing the same sweep in both

Hi! Excuse the delay, but I had to deal with a corrupted NTFS file system that ate many important files on an USB stick... The FLAC version of the original is almost 6MB and it can be downloaded slowly from this time-limited link: https://sbr5vjid0jgmce4q.myfritz.net:40262/nas/filelink.lua?id=0ba5a10529a6fe7b On the meaning of a logarithmic sweep: If you use foobar2000 and the

On Aug 07 00:41:52, petrparizek2000 at yahoo.com wrote: > ????#1. To test encoding at low bitrates, I encoded a sine sweep at 12 kbps > with Opusenc and then decoded the resulting file with Opusdec. What sine sweep exactly? How did you obtain it, and how exactly did you encode and decode it? Jan > The strange > thing was that even though the output wave file was at 48 kHz, it

Hi, I just released Opus 1.3-beta. This is a beta release towards the upcoming Opus 1.3. Changes include: - The spec fixes in RFC 8251 are now enabled by default - Improvements to the VAD and speech/music classification using an RNN - Improvements to stereo speech coding at low bitrate - Added support for ambisonics projection using mapping 3 (disabled by default) - Fixes to the CELT PLC

> Message: 4 > Date: Sat, 17 Nov 2018 18:43:40 -0800 > From: "Timothy B. Terriberry" <tterribe at xiph.org> > To: opus at xiph.org > Subject: Re: [opus] Impossible two bugs in Opus > > ongaku zettai wrote: > > i think opus decreasing bitrate only when it thinks that audio > > is too complex for human to hear difference. that's a bad attitude.

Hello all, I'm currently in the process of implementing a mixing matrix into the header of OPUS files for the proposed channel mapping 3 seen here: https://tools.ietf.org/html/draft-ietf-codec-ambisonics-03#section-3.2 My implementation simply replaces writing the stream mapping char array with the Q15 col-wise matrix vals described in the above document. I'm able to write/read matrices

did another test of many. NeroAAC q=1 @400kbps and Vorbis q=10 @412kbps shared 2nd place. OPUS @330 kbps - 3rd place. LAME MP3 q=0 @320 kbps - 1st place. ---JPEG file attached--- Please disable speech synthezation in OPUS for 96 kbps and up. I don't want my music sound like from a phone speaker! Or what is the problem? Modern codec at high bitrates should produce nearly bit-exact sound, not