Krisp is described as 'AI cancels background noise, transcribes conversations, generates searchable meeting notes, and shares summaries securely across platforms with privacy certifications' and is a audio transcription tool in the audio & music category. There are more than 50 alternatives to Krisp for a variety of platforms, including Web-based, iPhone, Android, Windows and Google Chrome apps. The best Krisp alternative is Amurex, which is both free and Open Source. Other great apps like Krisp are NVIDIA Broadcast, Otter.ai, NoiseTorch and SteelSeries GG.
Noise Blocker acts like a noise gate, not a noise filter. It keeps listening to the microphone and when it detects sounds above a certain level, it just let everything pass, without filtering the background noise. It helps for sure, but it's not a good alternative to Krisp, as Krisp really filters the audio and removes the background noise, letting only the voice pass.