24 bit sound input & output

[AlexanderKhodarev]

Hello LV community.

We all know that LV has a number of build in vis which allow the recordining and playback of the sound. They have a limit on sampling frequency - 44 KHz and resolution 16 bit/sample. I wonder if anyone have learned how to overcome these limitations?

I'm trying to figure out the way to sample sound for input and output at 96KHz with at 24 bit resolution.

(There is a number of posts on the subject here and there but no explicit solution.)

Best regards,
Alex

[eek]

Hi Alex,

Are you referring to vi's in the Sound and Vibration Toolkit? If not, it may be something worth looking into regarding optimal frequency and resolution.

Cheers,

Emilie

[AlexanderKhodarev]

No, i'm not referring to sound toolkit. (by the way how can i learn what VIs sound toolkit contains?) I really like to know if it is possible to do the trick without add-onns, just using LV and API functions.

[eek]

Hi Alex,

The maximum sampling frequency of LabVIEW's sound vi's is addressed in this Knowledge Base.

I'll have to check and see about the 24 bit resolution. It may depend on which version of LabVIEW you are working in. What version do you have?

Cheers,
Emilie

[AlexanderKhodarev]

I have 8.2.1

[eek]

Hi Alex,

With LV 8.2.1, I do not think that 16-bits is the limit on resolution. Rather, the sound input and output vi's can have elements of 8-bit unsigned, 16-bit signed, 32-bit integers signed or single and double precision data types to represent the sound array data.

Perhaps I am misunderstanding, but is this the kind of information that will help you?

Cheers,

Emilie