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devel / comp.lang.python / Re: Regarding inability of Python Module Winsound to produce beep in decimal frequency

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* Re: Regarding inability of Python Module Winsound to produce beep inChris Angelico
`- Re: Regarding inability of Python Module Winsound to produce beep injak

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Re: Regarding inability of Python Module Winsound to produce beep in decimal frequency

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From: ros...@gmail.com (Chris Angelico)
Newsgroups: comp.lang.python
Subject: Re: Regarding inability of Python Module Winsound to produce beep in
decimal frequency
Date: Sat, 14 Aug 2021 02:17:05 +1000
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 by: Chris Angelico - Fri, 13 Aug 2021 16:17 UTC

On Sat, Aug 14, 2021 at 2:11 AM Terry Reedy <tjreedy@udel.edu> wrote:
>
> On 8/13/2021 6:53 AM, Umang Goswami wrote:
> > Hi There, Hope you find this mail in good health.
> >
> > I am Umang Goswami, a Python developer and student working on a huge
> > project for automation of music instruments. I am producing the musical
> > notes using the Beep function of Winsound Module(
> > https://docs.python.org/3/library/winsound.html) by passing frequency as a
> > argument to the function.
> >
> > Now whenever i provide frequency of any note in decimal(for example
> > 277.1826 for C4 note) it shows following error:
> > Traceback (most recent call last):
> > File "C:\Users\Umang Goswami\Desktop\Umang Goswami\test.py", line 2, in
> > <module>
> > winsound.Beep(111.11,111111)
> > TypeError: integer argument expected, got float
> >
> > Now I have to round up the frequencies. This is hurting the quality,
> > accuracy ,authenticity and future of the project. Almost all the notes have
> > the frequencies in decimal parts. Rounding up means changing semitones and
> > quatertones thus whole note itself. This problem is technically making my
> > program useless.
> >

Is it really? In my experience, no human ear can distinguish 277Hz
from 277.1826Hz when it's played on a one-bit PC speaker, which the
Beep function will be using.

ChrisA

Re: Regarding inability of Python Module Winsound to produce beep in decimal frequency

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From: nos...@please.ty (jak)
Newsgroups: comp.lang.python
Subject: Re: Regarding inability of Python Module Winsound to produce beep in
decimal frequency
Date: Sun, 15 Aug 2021 10:25:07 +0200
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 by: jak - Sun, 15 Aug 2021 08:25 UTC

Il 13/08/2021 18:17, Chris Angelico ha scritto:
> On Sat, Aug 14, 2021 at 2:11 AM Terry Reedy <tjreedy@udel.edu> wrote:
>>
>> On 8/13/2021 6:53 AM, Umang Goswami wrote:
>>> Hi There, Hope you find this mail in good health.
>>>
>>> I am Umang Goswami, a Python developer and student working on a huge
>>> project for automation of music instruments. I am producing the musical
>>> notes using the Beep function of Winsound Module(
>>> https://docs.python.org/3/library/winsound.html) by passing frequency as a
>>> argument to the function.
>>>
>>> Now whenever i provide frequency of any note in decimal(for example
>>> 277.1826 for C4 note) it shows following error:
>>> Traceback (most recent call last):
>>> File "C:\Users\Umang Goswami\Desktop\Umang Goswami\test.py", line 2, in
>>> <module>
>>> winsound.Beep(111.11,111111)
>>> TypeError: integer argument expected, got float
>>>
>>> Now I have to round up the frequencies. This is hurting the quality,
>>> accuracy ,authenticity and future of the project. Almost all the notes have
>>> the frequencies in decimal parts. Rounding up means changing semitones and
>>> quatertones thus whole note itself. This problem is technically making my
>>> program useless.
>>>
>
> Is it really? In my experience, no human ear can distinguish 277Hz
> from 277.1826Hz when it's played on a one-bit PC speaker, which the
> Beep function will be using.
>
> ChrisA
>

Hi,
you could use a trick to get a better approximation:
277 * 4 = 1108
278 * 1 = 278
1108 + 278 = 1386
1386/5 = 277.2
now, respecting the duration of the tone, in accordance with its simple
rate, the buffer to be played will become:
277, 277, 277, 277, 278, 277,
277, 277, 277, 278, 277, 277,
.... and so on.

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