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You have to convert them over I'm afraid. I had a look around for the format of bwg files, but couldn't find much of anything :(
edit: check out my post on page 7 http://forums.qj.net/showthread.php?...6&page=7&pp=10
it tells you how to convert BWG files manually.
It just got even better. I've managed to whip up a 16 channel mixer(8 left 8 right) that will mix all of the binaural beats into one complex wave. This frees up a total of 3 more stereo channels that can be used for generation of white noise, or the playing of MP3s/WAVs.
This also has cut down the file size and complexity of the code by a bit of a margin. I had a bit of a problem when mixing all of the 16 channels, but it turned out to be a redundant loop cycle that tried to read from uninitialised integers. Reducing the loop by one make the sound crystal clear with no distortion to any of the waves :D
If anyone is interested in how I did this, here's my audio callback function, fully commented. This was adapted from the wavegen sample in the SDK.
I'll release an updated version later today or tommorow, depending on what happens :)Code:////////////////////////////////
/// audioCallback
///
/// combines multiple generated
/// frequencies into one
/// stereo channel
///
/// referenced variables:
/// float freq[16][3];
/// float oldFreq[16][2];
/// float sampleTime[16][2];(initial value of 0)
////////////////////////////////
void audioCallback(int channel, unsigned short* buf, unsigned int length) {
//These three variables are standard, they control the length
//of each sample, volume range of each sample, and
//the pointer to our audio buffer
const float sampleLength = 1.0f / sampleRate;
const float scaleFactor = (SHRT_MAX - 1.0f)/2;
sample_t* ubuf = (sample_t*) buf;
//The i variable is standard, but the z is an addition
//i is used to loop through the length of the
//sample we are making, generating the waves as it goes.
//z is used in the loop below to combine all of the
//waves generated in the previous loop.
int i,z;
for (i = 0; i < length; i++) {
//Our left and right wave values
short zL=0;
short zR=0;
//8 stereo hz holders(0-7)
for (z = 0; z < 7; z++ )
{
//Check to make sure we are supposed to be
//generating a tone, so as to prevent
//quietening of the whole sample
if (freq[z][0] > 0)
{
//Here we correct the time stamp of the sample
//incase of freq change(such as with timers)
//freq[z][0] = base freq(e.g. 200hz)
//freq[z][1] = offset freq(e.g. 210hz)
if (freq[z][0] != oldFreq[z][0]) {
sampleTime[z][0] *= (oldFreq[z][0] / freq[z][0]);
}
if (freq[z][1] != oldFreq[z][1])
{
sampleTime[z][1] *= (oldFreq[z][1] / freq[z][1]);
}
//This is the rendering of the two sine
//waves we want(left and right, base and beat
short s = (short) (scaleFactor * sinf(2.0f * PI * freq[z][0] * sampleTime[z][0]));
short s2 = (short) (scaleFactor * sinf(2.0f * PI * freq[z][1] * sampleTime[z][1]));
//Have we been through the loop before
//if so we need to combine the previous
//generated waves with these two
//If not, then we can set our final wave
//variables as the generated ones
if (z == 0)
{
zL = s;
zR = s2;
} else {
//Here is where the samples are added together
//We first of all add the two wave values
//producing a complex wave, then to compensate
//for distortion we find the mean between
//the two freqs and subtract it from the overall
//wave, and then divide by two to normalise the
//the amplitude
zL = ((s+zL) - ((s*zL)/(SHRT_MAX*2)))/2;// - (s.s2) / 32768;
zR = ((s2+zR) - ((s2*zR)/(SHRT_MAX*2)))/2;
}
//Move the time along
sampleTime[z][0] += sampleLength;
sampleTime[z][1] += sampleLength;
if (sampleTime[z][0] * freq[z][0] > 1.0f) {
double d;
sampleTime[z][0] = modf(sampleTime[z][0] * freq[z][0], &d) / freq[z][0];
}
if (sampleTime[z][1] * freq[z][1] > 1.0f) {
double d;
sampleTime[z][1] = modf(sampleTime[z][1] * freq[z][1], &d) / freq[z][1];
}
//Incase the freq changed, update the main holder
oldFreq[z][0]=freq[z][0];
oldFreq[z][1]=freq[z][1];
}
}
//Filling the buffer with the produced data
ubuf[i].l = zL;
ubuf[i].r = zR;
}
}
It seems like some distortion does appear, so this won't be used.
Indeed confusing.....
Psilocybeing, can't you write a program that converts bwg to the file as a txt document without .txt and put it in the presents folder so we can listen to it on the PSP?
I can't find any specifications for the bwg format unfortunately, so no :(
Psilocybeing, correct me if I'm wrong. Here's the link for the Sinus Cure preset.
Sinus Cure
V3600 72.0
V90 1.8
V90 1.8
V125 2.5
V7300 146
V20000 456
V0 0
V0 0
T1 599 1200 3600 72.0
T2 600 1200 90 1.8
T3 600 1200 90 1.8
T4 597 1200 125 2.5
T5 600 1200 7300 146
T6 600 1200 20000 456
have u tried the sinus one yet? man i wish this was released sooner, i had the worst sinus infection like a month ago and now its gone after like 30 types of medicen a day, this could have saved me the trouble.
I tried it on my computer, it worked like 5 minutes after I listened to it, my left and right popped open simutaneously, that's miraculous.
Well, I tried one of the presets, and what do you know, I was falling asleep... Not good though, because I was using the computer. :)
Good work on this, I hope it can help with my sleeping problem.
What do you recommend If I wanted to have a really trippy experience? Also, which are the best pre-sets for 1. Sleeping 2. Alertness (for when I get up in the morning) 3. Vivid Experiences ( i read in this thread somewhere that someone had them, and I need to know which ones so I can try =p)
OOBE, it's insane!!!!!