Post by thread:[PIC] LUT from sound file?

Sorry for the repeat. This was my first question and I neglected to put [PIC] in the subject line so maybe most readers didn't receive or read it. Anyway, I was surprised at the lack of response from such a knowledgable group, so just to be sure ... here it is again. I need to produce 8 bit LUT's of a single cycle of varying shaped waveforms generated in an audio waveform editor. Programs such as CoolEdit (now Adobe Audition) can generate arbitary waves at 255sps and save as ASCII text data which gives numerical values that then need to be converted one-by-one to hex. This seems like a round-about approach. Does anyone have a better suggestion? I would have thought this need might have been previously addressed by some program that would convert a WAV or raw PCM file to a LUT, where the user specifies the desired number of values. It certainly would be handy. Thanks for any advice on this. Peter Nielsen

Peter Nielsen wrote: > Sorry for the repeat. This was my first question and I neglected to put > [PIC] in the subject line so maybe most readers didn't receive or read it. Yep. > Anyway, I was surprised at the lack of response from such a knowledgable > group, so just to be sure ... here it is again. If we don't respond it's probably because we don't have a ready answer. Or the answer is so obvious we can't be bothered to state it. > I need to produce 8 bit LUT's of a single cycle of varying shaped waveforms > generated in an audio waveform editor. > > Programs such as CoolEdit (now Adobe Audition) can generate arbitary waves > at 255sps and save as ASCII text data which gives numerical values that > then need to be converted one-by-one to hex. Why convert? Why not set the assembler default radix to decimal? > This seems like a round-about > approach. Does anyone have a better suggestion? Use an editor in column mode to add your 255 " DB " prefix to the values. Word can do it, then save as ASCII. You can also use excel to generate your values and produce a 'report' with the required prefix characters. > I would have thought this need might have been previously addressed by some > program that would convert a WAV or raw PCM file to a LUT, where the user > specifies the desired number of values. It certainly would be handy. The was previously discussed on the list. Olin? has some tools for encoding sound files into data tables. Search the archive. http://www.piclist.com R

Peter Nielsen wrote: {Quote hidden}>Sorry for the repeat. This was my first question and I neglected to put >[PIC] in the subject line so maybe most readers didn't receive or read it. >Anyway, I was surprised at the lack of response from such a knowledgable >group, so just to be sure ... here it is again. > >I need to produce 8 bit LUT's of a single cycle of varying shaped waveforms >generated in an audio waveform editor. > >Programs such as CoolEdit (now Adobe Audition) can generate arbitary waves >at 255sps and save as ASCII text data which gives numerical values that >then need to be converted one-by-one to hex. This seems like a round-about >approach. Does anyone have a better suggestion? > >I would have thought this need might have been previously addressed by some >program that would convert a WAV or raw PCM file to a LUT, where the user >specifies the desired number of values. It certainly would be handy. > >Thanks for any advice on this. > >Peter Nielsen > > There are many tools available for this. http://www.softforall.com/mp3naudoi/RippersEncoders/Complete_Audio_Converter_Pro01090043.htm is one sample. BTW is [PIC] the right tag for this subject? ;-) Cheers /Ake -- --- Ake Hedman (YAP - Yet Another Programmer) eurosource, Brattbergavägen 17, 820 50 LOS, Sweden Phone: (46) 657 413430 Cellular: (46) 73 84 84 102 Company home: http://www.eurosource.se Kryddor/Te/Kaffe: http://www.brattberg.com Personal homepage: http://www.eurosource.se/akhe Automated home: http://www.vscp.org

>> Sorry for the repeat. This was my first question and I neglected to >> put >> [PIC] in the subject line so maybe most readers didn't receive or >> read it. > Yep. >> Anyway, I was surprised at the lack of response from such a >> knowledgable >> group, so just to be sure ... here it is again. > If we don't respond it's probably because we don't have a ready > answer. Or the answer is so obvious we can't be bothered to state > it. These two responses don't seem to be well correlated :-) RM

>Programs such as CoolEdit (now Adobe Audition) can generate arbitary waves >at 255sps and save as ASCII text data which gives numerical values that >then need to be converted one-by-one to hex. This seems like a round-about >approach. Does anyone have a better suggestion? Well two possibilities Import the decimal values, and precede the table with the operator that define decimal as the default. The second is to import the decimal values in a column in Excel, and use the hex operator to get the hex values in the next column, which you can then copy out.

On Thu, 10 Mar 2005 15:05:39 +1100, you wrote: >Sorry for the repeat. This was my first question and I neglected to put >[PIC] in the subject line so maybe most readers didn't receive or read it. >Anyway, I was surprised at the lack of response from such a knowledgable >group, so just to be sure ... here it is again. > >I need to produce 8 bit LUT's of a single cycle of varying shaped waveforms >generated in an audio waveform editor. > >Programs such as CoolEdit (now Adobe Audition) can generate arbitary waves >at 255sps and save as ASCII text data which gives numerical values that >then need to be converted one-by-one to hex. This seems like a round-about >approach. Does anyone have a better suggestion? you don't need to convert to hex - you can do 'radix dec' before the data If you're only doing a few, then search and replace in decent text editor will get you most of the way from a list of numbers to something you can put in a source file. If you need to do any numeric conversion, either use excel, or have a macro e.g radix dec macro snd a dt a/2+128 endm sounddata snd 120 snd 100 radix hex

> On Thu, 10 Mar 2005 15:05:39 +1100, you wrote: > > > Programs such as CoolEdit (now Adobe Audition) can generate > > arbitary waves > > at 255sps and save as ASCII text data which gives numerical > > values that > > then need to be converted one-by-one to hex. This seems like > > a round-about > > approach. Does anyone have a better suggestion? If you're like me, I guess that you'dlike something that can run in "batch", like in a BAT file or something. IMHO, having to fire up Excel or similar "heavy" tools isn't what one would liketo do. At least not if this will be run on a regular basis. (The "Windows Scripting" tool from Microsoft might be another option, b.t.w) This was you can rellativily easy integrate the WAV->LUT tool with MPASM in the same BAT file, if you'd like, for an automated "build" directly from the WAV file. Personaly I'm quite found of WinBatch from Wilson WindowWare. See http://www.winbatch.com. Actulay, the WinBatch quick intro is quite funny : http://www.winbatch.com/quickstart.html Quote : "WinBatch is a bunch of software that allows people to create their own software programs to do stuff on their own computers. This is done by "programming", which is, basically, sitting in front of a computer and typing in a bunch of text, called "code"." If you didn't knew already... :-) Enjoy, Jan-Erik.

Peter Nielsen wrote: > I would have thought this need might have been previously addressed by > some program that would convert a WAV or raw PCM file to a LUT, where > the user specifies the desired number of values. It certainly would be > handy. I have some WAV file manipulation programs at http://www.embedinc.com/pic/dload.htm. Among other things, this software can resample a WAV file to a different sample rate, extract only sections of the original, and write WAV data to a text file in comma separated values format. From there it would only take a few edit operations to produce a table in MPASM format. Another program is part of the HAL firmware on the same page. It is specific to the HAL firmware, but takes a WAV file and produces an MPASM include file. This table is intended for 14 bit core machines and contains two 7 bit samples per word. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com

Palmed GmbH wrote: > if I only knew, what a LUT is.... Look Up Table. > mit freundlichen Grüßen Oh, in that case maybe something like Aufschlagzahlenindercomputervergisnessmittel? ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.co

Alan B. Pearce wrote: > Well two possibilities > > Import the decimal values, and precede the table with the operator that > define decimal as the default. > > The second is to import the decimal values in a column in Excel, and > use the hex operator to get the hex values in the next column, which > you can then copy out. To me the far more obvious answer is to set decimal as the default radix anyway. I'd rather have HEX be the exception. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com

piclist-bounces@mit.edu wrote: > Aufschlagzahlenindercomputervergisnessmittel? Pardon? tongue-in-cheek humor poking fun at our habit of creating really long compound words. if you use LEO to translate 'look up', one of the results you get is 'eine Tabelle aufschlagen' maybe instead of 'aufschlag' it should be 'nachschlag(en)' having to explain a joke makes it non-funny. No wonder everyone considers Germans so serious :) RechnerTabellenaufschlag?

On Mar 10, 2005, at 1:36 AM, Jan-Erik Soderholm wrote: > If you're like me, I guess that you'dlike something that > can run in "batch", like in a BAT file or something. There are all sorts of unix shell scripting languages that do this thing pretty easily; all you need to do is install one of those windows packages that includes a unix shell and appropriate utilities. I did this to create a "utility" to copy from a kid's digital camera flash card to appropriate places and fire up irfanview, once... OTOH, the last time I needed to do some very basic unix shell scripting, I gave up trying to figure out the various obscure and inconsistent shells and stuff, and just wrote a little C program (already knowing C) to do it instead... BillW

Peter, I don't understand the need for all the extra work. If the 8-bit wav file is converted to a PCM file (uncompressed wav) the binary values are already there. Use a hex editor or build a simple script (as Bill suggest) if needed to do repeatedly. Cheers /Ake William Chops Westfield wrote: {Quote hidden}> On Mar 10, 2005, at 1:36 AM, Jan-Erik Soderholm wrote: > >> If you're like me, I guess that you'dlike something that >> can run in "batch", like in a BAT file or something. > > > There are all sorts of unix shell scripting languages that > do this thing pretty easily; all you need to do is install > one of those windows packages that includes a unix shell and > appropriate utilities. I did this to create a "utility" to > copy from a kid's digital camera flash card to appropriate > places and fire up irfanview, once... > > OTOH, the last time I needed to do some very basic unix shell > scripting, I gave up trying to figure out the various obscure > and inconsistent shells and stuff, and just wrote a little > C program (already knowing C) to do it instead... > > BillW -- --- Ake Hedman (YAP - Yet Another Programmer) eurosource, Brattbergavägen 17, 820 50 LOS, Sweden Phone: (46) 657 413430 Cellular: (46) 73 84 84 102 Company home: http://www.eurosource.se Kryddor/Te/Kaffe: http://www.brattberg.com Personal homepage: http://www.eurosource.se/akhe Automated home: http://www.vscp.org

On Thu, 10 Mar 2005, William Chops Westfield wrote: > OTOH, the last time I needed to do some very basic unix shell > scripting, I gave up trying to figure out the various obscure > and inconsistent shells and stuff, and just wrote a little > C program (already knowing C) to do it instead... I find that as I get proficient with the (200+) various scripting languages available I started using scripting languages *instead* of proper C programs. The last instance for me being a bit-banged a/d converter which I had to read out to figure out some glitches, in the form of a realtime scope with recording facility, and I caught myself writing the i/o readout and scope gui in tcl, this taking less than half a day. The odd thing was, that it worked (in real time), and it was less than 200 lines of code. Then I converted to a X11/Xlib program written in C and that worked too, but the speed gains were not so great ... (bit banged io is very slow). Peter