Sanwu FLAC and Bluetooth player has a significant flaw
I was going to write a post praising this player for the superb value for money (its the only cheap single-chip FLAC player I've found) but this morning it produced an alarming series of whistles and pops from what I presume is a corrupt file on my TFcard. So now its only recommended if you're sure you have perfect data on your card - it doesn't seem to mute the audio when an error is found.
Apart from this major howler at just 30rmb its great, providing as it does FLAC, WAV and mp3 support along with Bluetooth running from a USB power source at 5V. The audio performance is decent when run through my modified XuanZu headamp as preamp - the level is rather low otherwise and I suspect it needs a high-impedance buffer for best dynamics.
I put the TFcard which gave the player hiccups into my PC reader and uploaded the 'problem' file to Audacity. No glitches noticed there so looks like I might have to dig a bit deeper to find out what went wrong. I shall try playing the file in another of my media players.
The file plays perfectly in another player so the plot thickens. I tried copying the file (to make two copies on the TFcard) and renamed the copy to a much shorter filename. Both versions of the file have the same problem. So my next idea is perhaps some of the metadata in the file is upsetting the decoder - stay tuned.
Browsing on Taobao, found this player which is even cheaper and looks to use the identical same chip (although on mine the top's sanded down, here you can see the part no.). It even comes with an remote : https://item.taobao.com/item.htm?spm...cket=13#detail
Apart from this major howler at just 30rmb its great, providing as it does FLAC, WAV and mp3 support along with Bluetooth running from a USB power source at 5V. The audio performance is decent when run through my modified XuanZu headamp as preamp - the level is rather low otherwise and I suspect it needs a high-impedance buffer for best dynamics.
I put the TFcard which gave the player hiccups into my PC reader and uploaded the 'problem' file to Audacity. No glitches noticed there so looks like I might have to dig a bit deeper to find out what went wrong. I shall try playing the file in another of my media players.
The file plays perfectly in another player so the plot thickens. I tried copying the file (to make two copies on the TFcard) and renamed the copy to a much shorter filename. Both versions of the file have the same problem. So my next idea is perhaps some of the metadata in the file is upsetting the decoder - stay tuned.
Browsing on Taobao, found this player which is even cheaper and looks to use the identical same chip (although on mine the top's sanded down, here you can see the part no.). It even comes with an remote : https://item.taobao.com/item.htm?spm...cket=13#detail
Total Comments 4
Comments
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Hi Richard, seem to be the audio file contain a cover art etc file attached to its audio file.. and the chip read as an audio file so everytime it change the file there is a buzzing soundPosted 16th March 2016 at 03:28 AM by jambul
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Ah thanks - its true there might be some non audio files on that TFcard, I shall investigate and delete them if there are. Good point!
<later> I found I had a .pdf file on that card, deleted it. No change - still get the weird noises from that file.Posted 16th March 2016 at 05:05 AM by abraxalito
Updated 16th March 2016 at 11:37 PM by abraxalito -
Cover art embedded as part of the mp3 tags might do this?Posted 24th March 2016 at 02:25 AM by kevinkr
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Yes it might - but I'm using no mp3s so far, only .flacs. Perhaps I could find some software which looks at flac metadata, I agree that's probably the best route forward to look at embedded stuff.Posted 24th March 2016 at 02:37 AM by abraxalito
