[audacity4blind] Re: high shelf filter
- From: Anders Holmberg <anders@xxxxxxxxxxxxxx>
- To: audacity4blind@xxxxxxxxxxxxx
- Date: Fri, 30 May 2014 22:41:52 +0200
Hi!
Doesn't nyquist plugins work on the mac?
/A
30 maj 2014 kl. 21:15 skrev Brad Erhardt <brad.erhardt@xxxxxxxxx>:
> Hi Robert that sounds fascinating! Good job on creating this, I know that
> this sounds really tricky since I took a peak once at the Nyquist programming
> language. I would be interested in checking this plugin out, I run audacity
> on a mac, but I have a windows computer that I can try it on.
>
> Thanks a lot,
>
> On 2014-05-29, at 3:28 PM, Robert Hänggi wrote:
>
>> Hi Brad
>>
>> I'm currently writing a plug-in that measures the threshold of hearing
>> and might be of use to you (at least if you're on Windows).
>> It's more accurate than a simple high-shelf filter because it uses the
>> Audacity EQ bands.
>> It works like this:
>> Each plug-in call plays a specific frequency with ascending volume (3
>> dB per second).
>> The user presses space as soon as he hears a tone. This value will be
>> stored and Ctrl-R plays the next sequence.
>> After all bands, the result is stored and can be imported as a XML
>> file into the Equalizer effect.
>>
>> The resulting curve makes that you hear all frequencies equally loud.
>> Inverting the curve will attenuate frequencies where your hearing is
>> weak and does therefore simulate your hearing experience for others.
>> However, the test persons should actually take their profile too, or
>> the filtered audio will not sound quite the same, i.e. it will
>> probably be too strong.
>>
>> Although the concept is very easy, the programming is really hard due
>> to the Nyquist limitations. Nevertheless, the main code runs and I
>> hope to finish it by the end of the week. You and all other
>> subscribers are welcomed to test it.
>>
>> Best regards
>> Robert
>>
>> The audacity4blind web site is at
>> //www.freelists.org/webpage/audacity4blind
>>
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>
> Brad Erhardt
> brad.erhardt@xxxxxxxxx
>
>
>
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