Re: Sound programming on PPC2002

From: Bjoern Feld (xfeld_at_aol.com)
Date: 05/04/04

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    Date: Mon, 3 May 2004 21:43:51 -0400

    Thanks Almon!

    "Almon B. Strowger" <strowger@NOSPAM.kook.com> schrieb im Newsbeitrag
    news:ezKYkYWMEHA.556@TK2MSFTNGP10.phx.gbl...
    >
    > Hi,
    >
    > You didn't state whether you have started this project or
    > not, nor which language you are using / would like.
    >
    > You might want to take a look at Hekkus Sound System:
    > http://www.shlzero.com/modules.php?name=Content&pa=showpage&pid=1
    > (Yes, it is overkill, but "free").
    >
    > There is no tone-frequency API in Win32 for Pocket PC, so if
    > you are using C/C++, you would have to use a sound library that
    > supports such a thing, such as above, or roll your own.
    >
    > You might want to look into the MIDI capability in Pocket PC 2002,
    > however I have seen people complain about its existence / functionality.
    >
    > If I were you, I would have several recordings of a beep at various
    > pitches, and instead of making them files, make them resources
    > and then load those resources. When they need to be played,
    > use sndPlaySound(). This is faster than always going to a file.
    > See "Using PlaySound with a Resource Identifier" in eVC help.
    > Then you can just increase or decrease the silent period between
    > the playing of the beeps. And at certain proximities, just change the
    > beep used to one of a different pitch (different resource). That way
    > you won't have to work down at the sample-level to change pitch.
    >
    > Hope this helps...
    >
    > Almon B. Strowger
    > KOOK Pocket Software
    >
    >
    > "Bjoern Feld" <bjoern.feld@target-instruments.com> wrote in message
    > news:e2oDJEVMEHA.128@TK2MSFTNGP09.phx.gbl...
    > > Hi,
    > >
    > > I'm trying to manage a direct frequency output on a PPC2002 (iPAQ)
    device.
    > > I'd like to set a starting frequency, e.g. 440Hz and later modify the
    > > frequency.
    > >
    > > The idea is to create a finder type application where the sound output
    > > changes in pitch and frequency the close the device gets to a source.
    > >
    > > I tried using .wav files but that approach was to slow for my
    application.
    > >
    > > Any help or suggestion is greatly appreciated.
    > >
    > > TIA
    > >
    > > Bjoern
    >
    >

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