foo_abx 2.0.2 reportfoobar2000 v1.3.102016-11-20 00:12:52File A: 01 Cracklin' Rosie.flacSHA1: 02c014523ef42f869952be67b8c445abeaadbfc4Gain adjustment: -2.18 dBFile B: 01 Cracklin' Rosie.oggSHA1: b3fdaa425e02a7fafaa6621ee47c9da406f74a7eGain adjustment: -2.17 dBOutput:DS : Primary Sound DriverCrossfading: NO00:12:52 : Test started.00:13:46 : 01/0100:14:28 : 02/0200:14:51 : 02/0300:15:19 : 03/0400:16:09 : 03/0500:16:29 : 03/0600:16:50 : 03/0700:17:07 : 04/0800:17:07 : Test finished. ---------- Total: 4/8Probability that you were guessing: 63.7% -- signature -- 4478484a14daa7e38bf82fe0c496ae0e8714fa5e
From what I've read on HA in the past few years, I think transcoding is really bad when starting from a low bitrate already compressed file. If you start from a high bitrate one (in your case 256kbps Vorbis), results could be acceptable for casual listening.
Hi,You can now (try to) ABX aptX more easily:https://github.com/FFmpeg/FFmpeg/commit/a337b36b8bd68cacd0e8903c0b26420cb30fbee8Tested with latest Zeranoe builds, 44100 encoded content wrongly identified as 48000 when decoding, decoded WAV header fixed with Header Investigator. AiZ
Hello,Sorry, I should have been more explicit. It was 2:00 AM when I posted my last message, so...To me, anyone can now finely tune their lossy encodes for Bluetooth usage.You take your original FLAC/WAV, encode to MP3/OGG/AAC/Opus/whatever, then encode to A2DP/SBC with the bitpool corresponding to your Bluetooth device or aptX if it supports it and eventually decode back to WAV, in order to ABX with the original. I suppose here that these ABX sessions will be done in a quiet environment, using "good/better" hardware, i.e. in conditions way more favourable to detect artefacts than a noisy, crowded, urban landscape which will help masking the defects.After that, you know that residual problems will (almost) only came from the DAC and/or amplifier of your Bluetooth receiver.Have a nice day, AiZ
One of two things are likely:1. That you will find that ogg 256 is transparent to you, i.e. if you abx the ogg256 and flac file, you will not be able to differentiate, or2. The reduction in quality due to the second bluetooth codec swamps any reduction in quality introduced by the first codec (ogg256).In general, I do not think it is true that a chaining of two codecs always produces horrible results.