Yes, the amplitude of a wav file saved with a wav file sink is differnt while I
open it with wav file source
- Original Message -
From: "Marcus Müller, CEL"
To: "maitry raval"
Cc: "discuss-gnuradio"
Sent: Friday, 7 June, 2019 08:15:30
Subject: Re: query regarding wav file recording th
Hello,
On Fri, 2019-06-07 at 12:40 +0530, Maitry Raval wrote:
> Hello,
>
> I am using USRP-B200 mini, and as I want to use USRP offline, that's
> why I am trying to record the transmitted modulated signal through
> UHD USRP source to some file, Is it ok to use .txt file for this?
Again, the file
Hello,
I am using USRP-B200 mini, and as I want to use USRP offline, that's why I am
trying to record the transmitted modulated signal through UHD USRP source to
some file, Is it ok to use .txt file for this?
And the problem arise in this is , when the signal is being recorded in a wav
file t
256 kHz is not a sampling rate supported by many devices. What USRP are
you using?
Also, the filename doesn't matter to its content at all, so this is
fine, but using .txt for a file that contains raw binary samples is
questionable.
So, back to your original problem: can you describe how the resu
Hello,
PLease find attached flowgraph for other end of txt file writing, as I have
received the transmitted signal through UHD USRP source block and record it in
a text file at 256k sample rate and then this recorded text file is being used
in next flow graph for converting it into wav file.
we really need both your Wav writing (we've got that) and Wav reading
flow graph to make any qualified statement.
Again, the file name in your file source is suspicious.
Best regards,
Marcus
On Wed, 2019-06-05 at 10:54 +0530, Maitry Raval wrote:
> Hello,
>
> Please check the flowgraph, as the
Hello,
Please check the flowgraph, as there is a wav file sink at output side, that
record the incoming signal, but when I use that same recorded wav file in wav
file source and check the output in time sink and FFT sink, then amplitude
changes.
With Best Regards,
Maitry Raval,
- Origina
Ok, there's no Wave file involved here; instead, you read a file as
complex 2×3bit floating point binary that has a .txt ending. Have you
read [1]?
Then, you're doing *way* more than just multiplying with a constant, so
really, I'm not sure this flow graph has *anything* to do with your
question.
Hello,
Please check the flow graph.
With Best Regards,
Maitry Raval,
- Original Message -
From: "Marcus Müller, CEL"
To: "maitry raval"
Cc: "discuss-gnuradio"
Sent: Tuesday, 4 June, 2019 08:56:22
Subject: Re: query regarding wav file recording through wav file sink block
Frankly, m
Frankly, multiplication with a constant doesn't offer any benefit. The
numbers stay the same, just scaled.
However, 8 bit might be the giveaway here: are you maybe trying to
multiply 8 bit numbers with a constant that leads to values larger than
what can be represented in 8 bits?
A screenshot of
Hello,
Thanks for your response.
My requirement is to use GNU generated wav file into MATLAB. But when I record
the wav file with 48k sample rate and 8 bits per sample, my recorded wavfile
shows a very low amplitude signal, the screenshot is attached, please check.
With Best Regards,
Maitry R
I assume you do the multiplication with a constance to change the
amplitude, and so that's right.
A multiplication with a constant does however not change the shape of
the signal at all, unless you're running into numerical limits.
We'll need more info on what exactly you're doing and what exact
Hello,
And when I use multiply constant block in order to increase the amplitude of
the wav file, It slightly change the amplitude and change the shape of the
signal. PLease someone guide.
With Best Regards,
Maitry Raval,
- Original Message -
From: "Maitry Raval"
To: "Marcus Müller, C
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