Generate Stereo using Matlab.
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From: Tauno Voipio on 19 Nov 2009 02:07 disney_snoopy wrote: > On Nov 19, 1:41 pm, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> > wrote: >> disney_snoopy wrote: >>> On Nov 19, 3:35 am, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> >>> wrote: >>>> Richard Dobson wrote: >>>>> disney_snoopy wrote: >>>>>> Hi all, >>>>>> Can anyone explain how to generate the stereo and decode it in channel L >>>>>> and R in Matlab. Need some explanation or example please!!! Would >>>>>> appreciate it... >>>>>> Thankz >>>>> ?? Generate "the stereo" what? Setting aside semantic niceties, "stereo" >>>>> audio is just a two-channel audio stream or file (or 2-column matrix, >>>>> etc), presumed to be sent to two (L/R) front speakers. Nothing to "decode". >>>>> Richard Dobson >>>> My guess is that he's attempting to simulate the >>>> multiplex used on top of a FM radio transmission, >>>> including the sub-carrier encoding, i.e. what you >>>> get from the FM demodulator. >>>> -- >>>> Tauno Voipio >>>> tauno voipio (at) iki fi- Hide quoted text - >>>> - Show quoted text - >>> Hi Richard, >>> This is something i was think about. >>> Doing some research before i proposed my project. >>> I read from the DSP e-book and i learn of how to the FM stereo >>> component work... Now i was thinking how to apply to a matlab or >>> mathcad... >>> Is there a way to generate out from the software? such like generate >>> out the output graph that look like the component of FM stereo with >>> the RDS. >>> Is this project valuable to do? >>> Plz comment... >>> Thankz. >> You did not respond to my question: Homework or study project? >> >> -- >> >> Tauno Voipio- Hide quoted text - >> >> - Show quoted text - > > Is that very important? Yes, it is. It is important to direct our responses so that we do not spoil your opportunity of learning. It is possible to use a mathematics program to simulate the processing in a DSP, also in your case. First, you need to make the important design decisions how to achieve your goal. This is the same process for a math program and for a DSP. -- Tauno Voipio
From: disney_snoopy on 29 Nov 2009 19:03 On Nov 19, 3:07 pm, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> wrote: > disney_snoopy wrote: > > On Nov 19, 1:41 pm, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> > > wrote: > >> disney_snoopy wrote: > >>> On Nov 19, 3:35 am, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> > >>> wrote: > >>>> Richard Dobson wrote: > >>>>> disney_snoopy wrote: > >>>>>> Hi all, > >>>>>> Can anyone explain how to generate the stereo and decode it in channel L > >>>>>> and R in Matlab. Need some explanation or example please!!! Would > >>>>>> appreciate it... > >>>>>> Thankz > >>>>> ?? Generate "the stereo" what? Setting aside semantic niceties, "stereo" > >>>>> audio is just a two-channel audio stream or file (or 2-column matrix, > >>>>> etc), presumed to be sent to two (L/R) front speakers. Nothing to "decode". > >>>>> Richard Dobson > >>>> My guess is that he's attempting to simulate the > >>>> multiplex used on top of a FM radio transmission, > >>>> including the sub-carrier encoding, i.e. what you > >>>> get from the FM demodulator. > >>>> -- > >>>> Tauno Voipio > >>>> tauno voipio (at) iki fi- Hide quoted text - > >>>> - Show quoted text - > >>> Hi Richard, > >>> This is something i was think about. > >>> Doing some research before i proposed my project. > >>> I read from the DSP e-book and i learn of how to the FM stereo > >>> component work... Now i was thinking how to apply to a matlab or > >>> mathcad... > >>> Is there a way to generate out from the software? such like generate > >>> out the output graph that look like the component of FM stereo with > >>> the RDS. > >>> Is this project valuable to do? > >>> Plz comment... > >>> Thankz. > >> You did not respond to my question: Homework or study project? > > >> -- > > >> Tauno Voipio- Hide quoted text - > > >> - Show quoted text - > > > Is that very important? > > Yes, it is. It is important to direct our responses so > that we do not spoil your opportunity of learning. > > It is possible to use a mathematics program to simulate > the processing in a DSP, also in your case. First, you > need to make the important design decisions how to > achieve your goal. This is the same process for a math > program and for a DSP. > > -- > > Tauno Voipio- Hide quoted text - > > - Show quoted text - Hi Tauno, I am still waiting for your help in Matlab. I know how to plot for the pilot frequency. But i doesnt know how to plot the L+R and L-R region on Matlab. Please help me on how to plot those region. Thank You
From: Tauno Voipio on 30 Nov 2009 15:43
disney_snoopy wrote: > On Nov 19, 3:07 pm, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> > wrote: >> disney_snoopy wrote: >>> On Nov 19, 1:41 pm, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> >>> wrote: >>>> disney_snoopy wrote: >>>>> On Nov 19, 3:35 am, Tauno Voipio <tauno.voi...(a)notused.fi.invalid> >>>>> wrote: >>>>>> Richard Dobson wrote: >>>>>>> disney_snoopy wrote: >>>>>>>> Hi all, >>>>>>>> Can anyone explain how to generate the stereo and decode it in channel L >>>>>>>> and R in Matlab. Need some explanation or example please!!! Would >>>>>>>> appreciate it... >>>>>>>> Thankz >>>>>>> ?? Generate "the stereo" what? Setting aside semantic niceties, "stereo" >>>>>>> audio is just a two-channel audio stream or file (or 2-column matrix, >>>>>>> etc), presumed to be sent to two (L/R) front speakers. Nothing to "decode". >>>>>>> Richard Dobson >>>>>> My guess is that he's attempting to simulate the >>>>>> multiplex used on top of a FM radio transmission, >>>>>> including the sub-carrier encoding, i.e. what you >>>>>> get from the FM demodulator. >>>>>> -- >>>>>> Tauno Voipio >>>>>> tauno voipio (at) iki fi- Hide quoted text - >>>>>> - Show quoted text - >>>>> Hi Richard, >>>>> This is something i was think about. >>>>> Doing some research before i proposed my project. >>>>> I read from the DSP e-book and i learn of how to the FM stereo >>>>> component work... Now i was thinking how to apply to a matlab or >>>>> mathcad... >>>>> Is there a way to generate out from the software? such like generate >>>>> out the output graph that look like the component of FM stereo with >>>>> the RDS. >>>>> Is this project valuable to do? >>>>> Plz comment... >>>>> Thankz. >>>> You did not respond to my question: Homework or study project? >>>> -- >>>> Tauno Voipio- Hide quoted text - >>>> - Show quoted text - >>> Is that very important? >> Yes, it is. It is important to direct our responses so >> that we do not spoil your opportunity of learning. >> >> It is possible to use a mathematics program to simulate >> the processing in a DSP, also in your case. First, you >> need to make the important design decisions how to >> achieve your goal. This is the same process for a math >> program and for a DSP. >> >> -- >> >> Tauno Voipio- Hide quoted text - >> >> - Show quoted text - > Hi Tauno, > > I am still waiting for your help in Matlab. > > I know how to plot for the pilot frequency. > But i doesnt know how to plot the L+R and L-R region on Matlab. > > Please help me on how to plot those region. > > Thank You You have not responded to my question... The problem for me it to know what I can suppose you knowing about the stereo multiplexing and handling of the required operations in sampled- data domain. If this is a study project we definitively will not provide you with a cook-book answer. Also, as a consultant, I usually get paid for such work. -- Tauno Voipio, MSEE |