#ST-TNG Theme
3 messages in this thread
Hi David –
Wanted to thank you for uploading the stereo ST-TNG theme music. Sounds
great!
I'm not playing it on an Amiga tho, which means I have a question if you
can answer it:
In the IFF file, is the left channel the first half of data, or the second?
Also, does the second half start exactly half-way through the BODY chunk?
Much thanks again! best – kev
Kevin,
Since the sample is ))STEREO((, the left and right channels MUST run
synchronous, otherwise the sample would have an echo delay effect, and
sound like it was recorded in the bathroom! So, the left channel IS the
left channel, the right channel IS the right channel – hence:stereo.
With my mono file BNDSTD.LZH (the AmericanBandstand theme) your theory
holds true. The left track is the first half, and the right is the second
half. The SOUND playback program can separate the tracks and run them back
to back (left then right) without a break.
I'm not exactly sure *where* the exact halfway point is on the sample.
Sorry. Why do you ask about the halfway point? Did the file "hiccup"?
And if you're not using an Amiga, just what *are* you using – and is
it playing in true stereo?
Full of questions,
<Dave>
Dave –
I'm using an MM/1, which is a new 15Mhz 680×0-based multitasking computer.
It has stereo D/A converters which use Amiga sound data perfectly. Also it
has dual A/D _inputs_, but since my stereo TV doesn't have output jacks, I
couldn't digitize the ST-TNG theme in stereo myself (so again, thanks!!).
The nice thing is that the DMA-driven sound can come from anywhere in 68K
memory (not just "chip ram"); and I've also been able to play your file
straight from the MM/1's high-density 3.5" floppies with no glitches.
The bad thing is that there is no separate DMA pointer for each stereo
channel…. thus I must first pre-mix left/right sides (so that each word
in memory contains a left channel byte and a right channel byte).
That ties in with the halfway point: your sound file consisted of 711940
data bytes, of which the first half (355970) was one channel, and the
second half was the other channel. I was afraid that the division wasn't
quite even, as the listening separation seemed a bit much to me… altho
since then, a friend has now heard it and said the theme was indeed just
like that.
Also I hadn't noticed the CHAN chunk before, which answered all my
questions: it flags the data as stereo, left channel data comes first, and
the data is exactly half and half (left/right). So I'm in good shape now.
Much thanks again! best – kev