[DECtalk] two dectalk questions (filter overload)

Edward Bruckert edbruckert at gmail.com
Wed May 27 17:35:33 EDT 2015


	Any song or other is free domain unless the author *ie  you   have claimed it as belonging to the author ===copyright
On May 27, 2015, at 1:36 PM, Tom Kopec via Dectalk <dectalk at bluegrasspals.com> wrote:

> To expand on what Ed said:
> 
> The vocal-tract filters are IIR (Infinite Impulse Response) filters implemented with non-saturating arithmetic.. so if a combination of filter coefficients and input signal causes a filter's accumulator to overflow, that filter goes unstable. Because they are IIR filters, the effects of that can go on for some time (often until the next silence period, sometimes longer)
> 
> ...tom
> 
> On 5/27/2015 12:00 PM, dectalk-request at bluegrasspals.com wrote:
>> 
>> Message: 1
>> Date: Wed, 27 May 2015 01:21:36 -0400
>> From: Mohamed <malhajamy at gmail.com>
>> To: DECtalk <Dectalk at bluegrasspals.com>
>> Subject: [DECtalk] two dectalk questions
>> Message-ID: <55655460.7030303 at gmail.com>
>> Content-Type: text/plain; charset=utf-8; format=flowed
>> 
>> Hi guys, so, I have two dectalk questions.
>> First one. I know that sometimes if dectalk's filters overload, it
>> produces a loud squeaking sound. I'm interested in what exactly happens
>> that causes the sound. I know that it's because dectalk's filters are
>> overloading, but I'm interesting in knowing more about what happens.
>> Second, I have a few songs that I've written. Could I share them on
>> here? And if so, are their any guidelines about it?
>> Thanks
>> 
> 
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