Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it gives
a graphic of the energy at different frequencies - a sort of instant
frequency response trace.

Thing like Audacity can analyse a recorded sample afterwards - I was
looking for something which will do it in real time.

--
*I don't believe in astrology. I am a Sagittarius and we're very skeptical.

Dave Plowman London SW
To e-mail, change noise into sound.

maanantai 23. lokakuuta 2017 16.13.21 UTC+3 Dave Plowman (News) kirjoitti:
Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it gives
a graphic of the energy at different frequencies - a sort of instant
frequency response trace.

Thing like Audacity can analyse a recorded sample afterwards - I was
looking for something which will do it in real time.

Free for trial period only, and highly recommened

http://www.nch.com.au/wavepad/fft.ht...AnvzE ALw_wcB

Iain

In article ,
Dave Plowman (News) wrote:
Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it gives
a graphic of the energy at different frequencies - a sort of instant
frequency response trace.

You could use something from the set

!IyoScope / ROXScope /ROXMiniScope which I wrote that do this. They let you
switch between 'scope' and 'FFT' displays. Available from

http://www.audiomisc.co.uk/software/index.html

source code included. Not yet bothered to do a version for later RO boxes
as it'd need to use the USB Audio which most RO users don't have kit for,
alas.

However the above are for Linux and RO, not Windows. The snag being that
the !IyoScope relies on the hardware specific to the Iyonix. However I'd be
surprised if there weren't lots of alternatives.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics https://www.st-andrews.ac.uk/~www_pa...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

In article ,
Jim Lesurf wrote:
However the above are for Linux and RO, not Windows. The snag being that
the !IyoScope relies on the hardware specific to the Iyonix. However I'd be
surprised if there weren't lots of alternatives.

Seems to be Iyonix only?

Must admit to not having use a RISC OS machine for anything audio related
for years. ;-)

--
*Gaffer tape - The Force, light and dark sides - holds the universe together*

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (Rabid Nutter) wrote:

----------------------------------------

Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it gives
a graphic of the energy at different frequencies - a sort of instant
frequency response trace.


** That job is much better done with "pink noise" - having equal energy per octave or part thereof results in a flat spectrum.

Accurate pink noise sources are not so easy to find and the reading will take some time to average out.

OTOH, for most audio electronics items, a sine / square wave generator plus scope is WAAYYYY better than either for response testing.




...... Phil

On 24/10/2017 12:05 AM, Dave Plowman (News) wrote:
Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it gives
a graphic of the energy at different frequencies - a sort of instant
frequency response trace.

Thing like Audacity can analyse a recorded sample afterwards - I was
looking for something which will do it in real time.


**If you have a 'smart 'phone' then there are lots of free apps that
will do what you want. Obviously, such software will probably run on a
tablet too. Ah, the joys of having the power of a 1970s Cray
supercomputer in one's pocket....

--
Trevor Wilson
www.rageaudio.com.au

On 24/10/2017 1:16 PM, Trevor Wilson wrote:
On 24/10/2017 12:05 AM, Dave Plowman (News) wrote:
Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it gives
a graphic of the energy at different frequencies - a sort of instant
frequency response trace.

Thing like Audacity can analyse a recorded sample afterwards - I was
looking for something which will do it in real time.


**If you have a 'smart 'phone' then there are lots of free apps that
will do what you want. Obviously, such software will probably run on a
tablet too. Ah, the joys of having the power of a 1970s Cray
supercomputer in one's pocket....


**Oops. Scratch that. Around 3 times the power of a mid-1980s Cray
supercomputer. Wow.

https://pages.experts-exchange.com/p...power-compared

This is a beaut, BTW (I have it on my 'phone):

https://play.google.com/store/apps/d...mAnalyze&hl=en


--
Trevor Wilson
www.rageaudio.com.au

In article , Dave Plowman (News)
wrote:
In article , Jim Lesurf
wrote:
However the above are for Linux and RO, not Windows. The snag being
that the !IyoScope relies on the hardware specific to the Iyonix.
However I'd be surprised if there weren't lots of alternatives.

Seems to be Iyonix only?

Afraid "!IyoScope" is specific to that machine's mainboard hardware.

Must admit to not having use a RISC OS machine for anything audio
related for years. ;-)

Since RO machines can now access USB and HDMI audio the field for use is
rather wider than it used to be! :-)

I could 'port' my scope/FFT apps for the above. Haven't done it because
I've been doing other things and no-one has been asking. But a decent USB
device works fine for these purposes. Indeed, that's what I use for my
Linux apps. Even something like the 'Benchmark' ADCs and DACs can now be
used with RO if someone wishes. So RO users are no longer limited to
low-grade audio kit.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics https://www.st-andrews.ac.uk/~www_pa...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

In article ,
Phil Allison wrote:
Dave Plowman (Rabid Nutter) wrote:

----------------------------------------

Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it
gives a graphic of the energy at different frequencies - a sort of
instant frequency response trace.


** That job is much better done with "pink noise" - having equal energy
per octave or part thereof results in a flat spectrum.

True. Hence my using 'say white noise' As the basic principle is the same.

Accurate pink noise sources are not so easy to find and the reading will
take some time to average out.

Perhaps a suitable prog. would generate the required pink noise too.

OTOH, for most audio electronics items, a sine / square wave generator
plus scope is WAAYYYY better than either for response testing.

I want something which gives a quicker way of doing a simple check.

--
*I didn't drive my husband crazy -- I flew him there -- it was faster

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Trevor Wilson wrote:
On 24/10/2017 12:05 AM, Dave Plowman (News) wrote:
Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it gives
a graphic of the energy at different frequencies - a sort of instant
frequency response trace.

Thing like Audacity can analyse a recorded sample afterwards - I was
looking for something which will do it in real time.


**If you have a 'smart 'phone' then there are lots of free apps that
will do what you want. Obviously, such software will probably run on a
tablet too. Ah, the joys of having the power of a 1970s Cray
supercomputer in one's pocket....

I want something a bit better and more convenient than a smart phone can
do. ;-)

--
*Go the extra mile. It makes your boss look like an incompetent slacker *

Dave Plowman London SW
To e-mail, change noise into sound.