Question about changing pitch without touching the tempo of an audio file

Brian Olesen

Hi folks,

I have a partially deaf friend, who would love to hear how some different
birds sounds, but her problem is that she can't hear the high pitched
frequencies of most birds.

She would love to hear them in the original tempo, but with a significantly
lowered pitch.

Wich tool will do this the best way, and do it without harming the original
feel of the sound too much?

Thanks in advance.

Brian from Denmark J

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