[sdiy] msgeq7 spectrum analyzer chip

[rick]

Reminds me of the LMF380:

<http://rbsfm.org/Downloads/Datasheet/LM/LMF380.PDF>

Such filters probably do a nice job splitting a signal in bands, for
frequency analysis purposes, but I wonder if assembling the output again
will result in anything acceptable, sound wise (i.e. vocoder).

Jürgen, hows your vocoder coming along? :-)

rick


On 14/04/2011 21:05, Noah Vawter wrote:
> 
> On Apr 14, 2011, at 2:23 PM, Barry Klein wrote:
> 
>> How much?
>> Did you go to www.mix-sig.com and ask them directly?
>> Check out their other parts too.
> 
> 
> wow, a smorgasboard of intriguing chips.
> 
> e.g. MSLOSC - 15 Hz to 64 kHz All Silicon Sine Source
> 
> very simple schematic:  http://i.imgur.com/E2nIN.jpg
> 
> Seems to include this capability "continuous time programmable lowpass  
> filter"   (it's for aliasing reduction, not general purpose signal  
> input)
> 
> this thing has a lot of registers!  Main clock divider, PLUS  
> "Fractional Frequency Control"
> 
> OK, the filter is 20-bit selectable with attenuation from -40dB (I  
> think)
> 
> It doesn't seem to have an "Amplitude" register, but perhaps the  
> filter can attenuate the main signal enough to make the sound inaudible?
> 
> 
> 
> 
> 
> 
>>
>> Barry
>>
>>
>> -----Original Message-----
>> From: synth-diy-bounces at dropmix.xs4all.nl
>> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of dan snazelle
>> Sent: Thursday, April 14, 2011 11:02 AM
>> To: dan snazelle
>> Cc: synthdiy diy
>> Subject: Re: [sdiy] msgeq7 spectrum analyzer chip
>>
>> woops
>>
>> they are much more expensive than i thought
>>
>>
>>
>> oh well
>>
>>
>>
>> On Apr 14, 2011, at 1:48 PM, dan snazelle wrote:
>>
>>> I thought for 2 bucks this looked like it might be a fun chip
>>>
>>>
>>> http://bliptronics.com/manuals/MSGEQ7.pdf
>>>
>>>
>>> http://bliptronics.com/item.aspx?ItemID=111
>>>
>>>
>>> it analyzes 7 bands and puts out DC through a multiplexed output.
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Synth-diy mailing list
>>> Synth-diy at dropmix.xs4all.nl
>>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>>
>>
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