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Post by rowmat on Jan 23, 2016 1:20:37 GMT -6
I'm going mad trying to find a car stereo head unit that will play 24bit/48khz wavefiles directly from USB without having to convert them to MP3 or some other compressed format first.
I want to be able to play our mixes in the same format we send to our mastering guy in the car.
It appears most car audio manufacturers have dropped wave file (wav) support.
Some Pioneer players claim to have 'wav' support via USB but all the Pioneer players I tried simply produced a bunch of white noise.
All other brands simply displayed 'N/A' or 'Unsupported'.
I'm guessing the players that claim to support 'wav' may only support wavs @ 16bit/44.1khz but I haven't yet tried 16bit as we generally only deal with 24bit/48khz.
Does anyone know of anything that will work?
I think Bluetooth streaming from a phone may apply some data compression as Bluetooth data transfer rates seem to be rather marginal for streaming 24/48.
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Post by tonycamphd on Jan 23, 2016 9:49:46 GMT -6
Just use an aux input and use ur phone to control
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Post by rowmat on Jan 27, 2016 0:47:56 GMT -6
Just use an aux input and use ur phone to control Thought about that but the 24bit wavefiles are reprocessed though the phones internal soundcard @16bits (HTC One Android) before the audio exits the headphone output. Bluetooth streaming appears to also compress the audio. However I have now found a solution. A phone app called USB Audio Player Pro bypasses the phone's internal audio processing and sends the uncompressed audio data directly to the phone's USB output from which it can be connected to a USB Class Compliant DAC. www.extreamsd.com/index.php/products/usb-audio-player-proAll I need is an OTG (On-The-Go) cable - (Micro USB to Standard USB female) - and I can then use my Sound Devices Mixpre-D as the DAC and feed Mixpre-D's line outputs into the AUX IN on my car stereo head unit. No bit reduction, down sampling or compression!  |
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Post by stribor1 on Jan 27, 2016 1:37:28 GMT -6
Do you really hear much of a difference to normal mp3 streaming considering the noise level in the car?
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Post by rowmat on Jan 27, 2016 2:16:32 GMT -6
Do you really hear much of a difference to normal mp3 streaming considering the noise level in the car? Probably not. The main purpose is to reference the mixed tracks in the car in the same format we are sending to our mastering guy. I have now found a way to achieve this with a $10 app and a $6 cable along with a high quality portable DAC that I already own. |
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Post by stribor1 on Jan 27, 2016 3:33:19 GMT -6
Smart!
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Post by tonycamphd on Jan 27, 2016 6:36:39 GMT -6
Do you really hear much of a difference to normal mp3 streaming considering the noise level in the car? Yes, a 16bit 44.1 wave file...? No not so much |
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Post by rowmat on Jan 30, 2016 19:10:19 GMT -6
Okay, I picked up an OTG cable (micro USB male > standard USB female) and installed USB Audio Player Pro on my HTC Android phone. Using my Sound Devices Mixpre-D as the DAC works a treat! I have ordered another OTG cable that will also allow me to keep the phone powered while connected to the DAC. If using a USB hub it is possible to use a USB stick for external music storage which can be accessed via the phone app without having to install the files onto the phone. So problem solved! |
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Post by yotonic on Jan 30, 2016 20:13:29 GMT -6
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ericn
Temp
Balance Engineer
Posts: 14,940 
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Post by ericn on Jan 31, 2016 15:46:13 GMT -6
I think the Eonon I put in the x5 will do it I just haven't tried it yet!
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Post by rowmat on Jan 31, 2016 19:04:45 GMT -6
Oh that's great! I have a date this weekend. Would you mind if I borrowed it? |
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Post by Ward on Feb 1, 2016 6:33:58 GMT -6
I have one of these...  and the USB input which handles the iPhone will USUALLY play 24/48 files off a USB thumb drive. Why 'usually'? I don't know. Sometimes it won't. |
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