Disklavier

> On Sep 29, 2016, at 1:59 AM, rightnightboy@... [disklavier] <disklavier@yahoogroups.com> wrote:
> 
> 
> Hi everyone!
> 
> I have an issue, that I once solved some years ago but I can't find back the solution... (lol). It goes like this: I have some .wav files (pianosoft plus audio format) that i want to play from my iMac into the DKC-850 for playback (midi and audio). I do this by playing the file in the mac and, from the mac audio out run an rca cable to the "Analog MIDI IN" input of the dkc-850... It doesn't work, the file seems not to be recognised and there is no midi track being played and no sound to the speakers. Someone told me about switching the left and right at the dkc input but that doesn't fix the problem. Is there a threshold for the Analog MIDI IN signal to be swallowed by the dkc... could the volume output of the mac be too loud or not enough loud... should itbee line level ? Then setting wise is there an important thing Im forgetting there in the MIDI (midi in: usb or midi) or Audio I/O section (omni i n/out : on or off ?, analog midi in volume : high up? )... Also i do hear half a second of sound (no midi though) when i power up the dkc while a .wav file is already being played on the Mac but then the dkc seems to mute it and nothing happens anymore. 
> 
> I thought about resetting the dkc completely... I hope its not a hardware issue... but as I wrote earlier I remember years ago a similar situation solved... (ah getting old already lol)
> 
> Thanks Any hints could help
> 
>  Alain
> 
> 
>

> On Sep 29, 2016, at 11:58 AM, rightnightboy@... [disklavier] <disklavier@yahoogroups.com> wrote:
> 
> Hi George
> 
> - yes sounds is outputed by the mac speakers 
> -tried ITunes and checked that all was flat no enhancements. Tried also other players . Tried with different output volume levels . Tried witch channel swap .
> 
> -analog midi in volume set : tried différent ones between 20 and 127
> 
> -if I plug into Omni in then I get it out from Omni out both channels ( music/ midi data )
> 
> I wanted to experiment more but today very busy in other fields 
> 
> :- )
> 
>

> On Sep 30, 2016, at 8:43 AM, rightnightboy@... [disklavier] <disklavier@yahoogroups.com> wrote:
> 
>  Thanks George and Spencer . I was able to play a pianosoff plus audio cd   Iin an old CD player with output into Analog Midi In sucessfully .., then  a .wav file from my iPhone  with same routing (through phone jack out) and it worked again ... so it's clear the problem comes from the IMac ... I'll try more later if I'm able to  isolate the culprit port or software ..,
> 
>

On 10/05/2016 02:10 AM, rightnightboy@... [disklavier] wrote:
>
> I have not had much time to tackle the problem but it comes definitely 
> from the Imac. I unearthed and old iMac G5 10.4.11 system from my 
> basement which runs 10.4.11 os ans it plays faithfully the .wav files 
> which are then recognised by the DKC and played perfectly: AH !
>
> So now why the much newer Imac isnt able to do that is a mystery . I 
> ve done eliminating games and found that it is not a software problem 
> (it occurs with all kinds of players), nor a hardware problem as far 
> as I can see ( same result from phone jack out, usb audio out, 
> bluetooth out) ... so Im a bit at lost and the machine not being 
> waranteed anymore Im hesitant to bring it to a service center with 
> such a precise and undectable flaw...
>

> On Oct 5, 2016, at 4:03 AM, Mark Fontana mark@... [disklavier] <disklavier@yahoogroups.com> wrote:
> 
> 
> 
> The encoding used for Pianosoft Plus Audio is very fragile.  It uses a modulation scheme called phase shift keying that is easily damaged by lossy compression, sample rate conversion, equalization, Bluetooth transmission, and other manipulation of the stream.  Be sure that all audio enhancement features are turned off, and close any video players.  (Most digital video uses a sampling rate of 48 KHz, while your WAV files are 44.1 KHz, and the computer's audio hardware can be physically set to only one rate at a time.  If two applications requiring different rates are active, the operating system will generally configure the hardware for the higher rate, and the lower rate will be upconverted in software before mixing, which would be detrimental to Pianosoft Plus Audio.)  It could be that the newer OS leaves the main audio hardware at 48 KHz at all times, since video playback is such a popular application these days.
> 
> It could be worth trying an external, generic USB audio dongle (an inexpensive one with as few features as possible), then configuring the playback software to use that instead.  Simply trying different audio hardware this way might do the trick.  I've used that technique on laptops with faulty audio hardware that sounds passable for casual listening but corrupts the output too much to support player piano streams.
> 
> Mark Fontana
> 
> 
> On 10/05/2016 02:10 AM, rightnightboy@... <mailto:rightnightboy@...> [disklavier] wrote:
>>   
>> I have not had much time to tackle the problem but it comes definitely from the Imac. I unearthed and old iMac G5 10.4.11 system from my basement which runs 10.4.11 os ans it plays faithfully the .wav files which are then recognised by the DKC and played perfectly: AH !
>> 
>> So now why the much newer Imac isnt able to do that is a mystery . I ve done eliminating games and found that it is not a software problem (it occurs with all kinds of players), nor a hardware problem as far as I can see ( same result from phone jack out, usb audio out, bluetooth out) ... so Im a bit at lost and the machine not being waranteed anymore Im hesitant to bring it to a service center with such a precise and undectable flaw...
>> 
> 
>