Search results

We have the Nyquist factor of sampling at twice a signals bandwidth (for audio 44.1kHz or 48kHz is considered more than enough) and we have bit depth which defines the accuracy of the sampling. With infinite bit depth we would have a perfect signal when sampling at twice the bandwidth of the...

Summarizing ... a) For analog 40kHz+ capable, For digital 24bit/96kHz b) For all "Listening Tests" c) The following wireless codecs have been cerified Hi-Res: LDAC, LHDC, SCL6, LC3plus, SHDC, aptX Adaptive MP3 (lame cbr 320) has a 20kHz cutoff limit Neroaac (q1 96kHz) has a 30kHz cutoff limit...

Thanks, I've seen LDAC testing with 1kHz and multitones but hadn't considered reproducing them with the various audio codecs as I don't have the equipment. But looking at the testing of Topping BC3 it appears that LDAC has distortion better than 100dB. Perhaps this methodology could improve...

Through LDAC it has been established that sub 1000kbps codecs can perform well enough to receive HiRes certification. Transparency would involve a SNR of say 96dB (CD) or better. The bar seems a lot lower with lossy codecs e.g. 74dB.

I tested with REW using AAC, MP3 and Vorbis codecs (qaac, neroaac, mp3lame, libvorbis) at high quality settings with 48kHz, 64kHz and 96kHz sample rates (powershell script attached). 1) Sweeps a. Generate REW mono measurement sweep from 20Hz to 36000Hz and save to 32bit 352kHz pcm wav...