search for: crescendo

...usenc --bitrate 133.333333 floex.wav floex-133.opus`, opus-tools 0.1.9 (using libopus 1.1.4). I used a Sony MDR-V6 pair of headphones and my laptop's oonboard audio. I detected the artifact when I was listening casually from my phone with the same headphones. In the second to last note of the crescendo (at ~5 s in the sample) there's a slight flutter in the original that turns more prominent and tape-like after encoding. I also tried encoding at 128 kbps and 150 kbps. ABX results: - floex-133.opus.wav 10/10, p-value<0.001 - floex-150.opus.wav 4/10, p-value<0.83 - floex-128.opus.wav 17...

Hi all, I routinesly rips my CDs to WAV and then convert to ogg vorbis format for use in my car and portable player. I don't usually notice anything amiss, but on the last track of Mike Oldfield's "Music of the Spheres" album ("Musica Universalis", at the very end crescendo), the converted .ogg file exhibits terrible distortion (sounds like digital clipping). This does not occur with MP3 or WMA formats. I used a quality factor of 4. Does oggenc raise the amplitude (to cause digital clippiing)? Any idea why this happens? Also, my previous experience with ogg vorbis...

I'm looking for some help from any Asterisk "heavy" who might be doing something similar to what I'm trying to do... Background: I work for a research lab, testing telephony products and tools. Historically, we used Ameritec Crescendos and Fortissimos to act as load generators and call "sinks" when testing equipment. However, the equipment we are testing gets more and more complex, and the scripted scenarios the Ameritecs give have become a limiting factor for testing. Therefore, Asterisk was chosen as a possible...

..., opus-tools 0.1.9 (using libopus 1.1.4). >> >> I used a Sony MDR-V6 pair of headphones and my laptop's oonboard audio. I >> detected the artifact when I was listening casually from my phone with the >> same headphones. >> >> In the second to last note of the crescendo (at ~5 s in the sample) there's >> a slight flutter in the original that turns more prominent and tape-like >> after encoding. >> >> I also tried encoding at 128 kbps and 150 kbps. >> >> ABX results: >> - floex-133.opus.wav 10/10, p-value<0.001 >&...

...wav > floex-133.opus`, opus-tools 0.1.9 (using libopus 1.1.4). > > I used a Sony MDR-V6 pair of headphones and my laptop's oonboard audio. I > detected the artifact when I was listening casually from my phone with the > same headphones. > > In the second to last note of the crescendo (at ~5 s in the sample) there's > a slight flutter in the original that turns more prominent and tape-like > after encoding. > > I also tried encoding at 128 kbps and 150 kbps. > > ABX results: > - floex-133.opus.wav 10/10, p-value<0.001 > - floex-150.opus.wav 4/10, p...