: A robust resource for royalty-free birthday party sound effects , including party whistles and blowers.

: Ensure you specifically choose the .wav option during download to maintain the uncompressed audio quality mentioned in your requirement.

: Offers a high-quality "Happy Birthday" whistling sound effect S2193 at 48,000 Hz / 24-bit depth, which is ideal for professional projects.

: Their massive library of over 16,000 samples is available for personal, educational, or research use in .wav format.