hi bernd, ian,

thanks for the input. I haven't had a look into the multi example for 'some' time. (1.5?)

the time drifting is something i had completely ignored. Yes, that would make it necessary to synch the stream in a DSP and feed the different devices.

I Think I have a starting point.

thanx!

Hi *,

i'm not asking for source code but for the best approach to synch a mp3, played on different sound cards... (not necessarily ASIO cards, so i should expect a big latency difference)

should i
1) play the same stream on all soundcards and try to compensate the latency of each soundcard to keep th streams in synch

2) stream one file and write a custom dsp which pipes the buffer to the different sound cards?

Or is there a different /better approach? I guess it's pretty hard, even if you know the absolute exact latency of a sound card, to keep the streams in synch (play/pause/search) and prevent strong phase shifting when listening to a stream, played on different devices at the same time...

Any ideas / input before i start coding?

thanks any idea,
- vertex

i head a dream last night... problem solved...

for those who are interested:

i head a call in my OnTimer function:

if(BASS_ChannelIsActive(hStream) == BASS_ACTIVE_PLAYING) {
   DWORD level;
   level=BASS_ChannelGetLevel(hStream);
   m_VU.SetVU(LOWORD(level)/327, HIWORD(level)/327);
}

here is the fix  ;o)

hStreamTempo = BASS_FX_TempoGetResampledHandle(hStream)
if(BASS_ChannelIsActive(hStreamTempo) == BASS_ACTIVE_PLAYING) {
   DWORD level;
   level=BASS_ChannelGetLevel(hStreamTempo);
   m_VU.SetVU(LOWORD(level)/327, HIWORD(level)/327);
}

i don´t know, why the BASS_ChannelGetLevel with the original channel-handle affects the sound-output and produces a buffer problem, but it does ;o)

cheers,
vertex

hi,

i try to implement bass fx 2.0 and bass 2.1... here my code-snippets:

BASS_Init(1,44100,0,GetSafeHwnd(),NULL);

   hStream = BASS_StreamCreateFile(false, m_sFileName, 0, 0, BASS_SAMPLE_LOOP|BASS_STREAM_DECODE);
   
   BASS_ChannelGetAttributes(hStream, &m_nFreq, NULL, NULL);
   BASS_FX_TempoCreate(hStream, 0);
   BASS_FX_TempoSet(hStream, 0.0f, -1, -100.0f);

   QWORD len = BASS_StreamGetLength(hStream);
   m_Progress.SetRange(0, len);
   BASS_ChannelPlay(BASS_FX_TempoGetResampledHandle(hStream), false);

m_Progress is an ownerdrawn controll, works with __int64... so there is nothing special... its realy plain code... bass_init is called in another class then the bass-functions are. but that should not be a problem... ah, the problem:

without using the bass_fx-lib everything works fine. after implementation the song is played tooo fast. i think about +10% - also it sounds a bit time-posterized. how to describe... like a vinyl, with some cracks and the needle jumps sometimes over 1 line forward ;o)

BASS_FX_TempoSet(hStream, 0.0f, -1, -100.0f);
and
BASS_FX_TempoSet(hStream, -10.0f, -1, -100.0f);
makes no difference in the output.

so what? what did i do wrong...

cheers,
vertex...

hi there!

a friedn contacted me with the following question:
is it possible to write a directX-plugin, sending the audio through an asio-driver to a hardware effect-processor, reading it back via the sound input (still asio-drivers ;o)  and adding the effects to the stream of his hardware-recording solution...

everything should work, i think... i could do, i think. but not with asio-drivers, cause bass dossent support it...  

so: anyone has an idea, how to do it? - or is there a dx-plugin which does this?

cheers,
vertex

i have one little request  

how about implementing a message, wich is sent, when a beat occourd
or when the bassfx expects that a beat will occour?!
would be very nice for some visual enhancements for the apps ;o)

cheers,
vertex

the multi-device thing sounds nice. maybe it will fix my headaches with this thing.
what im actually trying to do is writing a player-class, but it doesent work.
so i try to implement in c++ a CPlayer class several times eg.
CPlayer m_Player1, m_Player2, m_Player3;
in each CPlayer::CPlayer() a temporary bass.dll is loaded - but if i init the first instance of the class all other classes are also initialised... so maybe the new bass2.0 will help me out ;o)

if someone is interestet looking into the CPlayer class and help me out with the init stuff, send me an email ;o)

ps.: when will the bass2.0 bereleased? ;o)

cheers,
vtx

sounds as you are right   thanks, i will try!

thats what i was searching for!!!

thanx a lot! the hints 'how to' had helped me a lot...
but this is mor than i expected! nice job, thanx thanx thanx!!!!!

hi there again!

is there a way to get the bitrate, frequency, mono/stereo-flag mpeg-layer format informations of the mp3 in the curren channel? i was looking now in the helpfile for about a half hour but did not find anything new i actually don´t know...  
pherhaps i´m just to stupid  

.vertex.

thanx a lot!

i have to look at the header file... but my soundcard should be able to record at 44.1/16 - it should record atleast until 24bit... sonar and samplitude do so...

so i have to figure it out - maybe i found a small bug or incomatiblity of bass - hopefully not ;o)
but thanx a lot!!

cheers,
arné

hi!

i just downloaded the new bass1.6, was wondering what is new ;o) ok, there is now recording: PERFECT - if it would work ;o)
if i start the pre-compiled demo-codes (eg rectest.exe) and try to start recording i get an errorcode '6'!

is there a file where the errorcodes are listed? im just working on a small laptop with a bad soundboard - but recording via dx8 from cakewalk, sonar or samplitude works! so why it won´t work with bass? bass also uses the wdma-drivers?! should be true...

hope my english is decodeable - my in-brain-english-encoder sometimes sucks *hehe*

cheers,
:vtx:

before i found this fu*** great bass lib i used xaudio (very slow in starting the streams and resource-eating) but there is a thing xaudio is/was (it´s no more free i think) very nice - you could implement winamp2.x plugins - may there a way to implement winamp plugs? or do this by a dsp-callback? anyone experienced?

cheers,
arné

You must write only 10/15 lines of code.

jup, or less...

as i worked with the xaudio.lib i also tried to implement this code from http://www.dspdimension.com/html/pscalestft.html into my code - it won´t work, but the bass dsp-callback is much easier to handle - i´ll try again ;o) thx a lot i had completely forgotten this site :o)))
cheers,

vertex

i was searching for example codes or infos for pitch/time bending and i found a lot of theoretical mathematic explanations - but that type of explanations were a bit to high for my little brain - even the translatlation into my native language was hard ;o)

but of course i will keep on searching - if i will find one day a solution i will post a dsp-example here and maybe someone here has some tips  :idea:

hi there!

what about a time-stretch pitch-bend functionality in bass? i mean time-stretching without affecting the pitch and pitchbending without affecting the duration (song-speed).
or does anyone have some algorythms (one algo would fit too   ) to do this by a dsp-effect??

cheers, vertex

yes, i tried to run 2 demo-apps in the 1.6-package... also didn´t work - maybe it was because i was using dx7?

there was no error-code, so i couldn´t get out, wich function fails...

i don´t know - but ok - i will try the 1.7 ;o)
tnx, ian
cheers, vertex

hi, ian

sorry - english is not my native language... ok:
i had 2 smal apps - 2 different .exe-files (msvc++). each of them plays an mp3 stream from my hd. as i updated to bass 1.6 only the 1. app played, the 2. started and did not play 1 frame. was it my fault? i dont know.

but if you say 1.7 can be loaded from different apps ate the same time like 1.4, everything would be nice 8o)

cheers!

hi!

i still use the old 1.4. as i updated my whole project to 1.6 i recognized in the ending, that only 1 bass.dll could be loaded at the same time - my app uses soundoutput on different cards - so i had to rewrite the fu***n shit back to yet good, stable, old 1.4 ;o)

so my question:
1) should i update to 1.7 now? are multible threads possible????

2) whats with my dsp-effects in the app? can i still use it?

cheers,
vertex