my octave problem

Algorithm development and general DSP issues

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musicvoice
Posts: 10
Joined: Mon Jun 27, 2011 4:11 pm

my octave problem

Post by musicvoice »

I just want to hear the bass frequencies.
I do not want mid and treble.
because I have to use your microphone
s letter-letter z - such as the high-frequency very bad.
please help me. thank you very much.

delayd mem 4096 ; Down delay
temp mem 1 ; Temp location for partial calculations
;
skp run,START

;
wldr RMP0,16384,4096
wldr RMP1,-8192,4096
;
START: ldax ADCL
; Write it to left delay and clear ACC
wra delayd,0
; Read in left
ldax ADCL
;
wra delayd,0
;
cho rda,RMP0,REG|COMPC,delayd
cho rda,RMP0,,delayd+1
wra temp,0
cho rda,RMP0,RPTR2|COMPC,delayd
cho rda,RMP0,RPTR2,delayd+1
cho sof,RMP0,NA|COMPC,0
cho rda,RMP0,NA,temp
mulx POT1
wrax REG0,0
;
cho rda,RMP1,REG|COMPC,delayd
cho rda,RMP1,,delayd+1
wra temp,0
cho rda,RMP1,RPTR2|COMPC,delayd
cho rda,RMP1,RPTR2,delayd+1
cho sof,RMP1,NA|COMPC,0
cho rda,RMP1,NA,temp
MULX POT2
wrax REG1,0
;
ldax ADCL
mulx POT0
rdax REG0,1.0
rdax REG1,1.0
wrax DACL,1.0
wrax DACR,0
frank
Posts: 1244
Joined: Wed Oct 19, 2005 12:26 pm
Contact:

Post by frank »

I'm not sure what you are asking exactly but if you just want bass range frequencies then you just need to add a low pass filter to the input of the code.
Frank Thomson
Experimental Noize
musicvoice
Posts: 10
Joined: Mon Jun 27, 2011 4:11 pm

octave

Post by musicvoice »

frank
but I do not know
how do
please write
my code Edit
please
thank you very much
slacker
Posts: 116
Joined: Tue Feb 01, 2011 1:13 pm

Post by slacker »

Have a look here http://www.spinsemi.com/knowledge_base/ ... .html#WRLX

and here, which shows the formula for calculating the coefficient to set the corner frequency.

http://www.spinsemi.com/knowledge_base/ ... ng_filters
musicvoice
Posts: 10
Joined: Mon Jun 27, 2011 4:11 pm

octave

Post by musicvoice »

input where?
I do not know
my english very bad
I can not
We produce audio & guitar amp mixer
We do not know our problem is to write code
thank you very much
frank
Posts: 1244
Joined: Wed Oct 19, 2005 12:26 pm
Contact:

Post by frank »

OK, if you are a manufacturer then you should be able to get help from the distributor you are getting the parts from. They should be able to help you modify the code to fit your needs.
Frank Thomson
Experimental Noize
musicvoice
Posts: 10
Joined: Mon Jun 27, 2011 4:11 pm

octave

Post by musicvoice »

I'm getting fv1 germany
http://www.profusionplc.com/Salesoffices.htm
help from there ?
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