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Just an update to the existing answer now that NASA itself has published a summary in https://mars.nasa.gov/news/9158/what-sounds-captured-by-nasas-perseverance-rover-reveal-about-mars/ and a full Nature article in https://www.nature.com/articles/s41586-022-04679-0

You could better skip my answer and just read the report in the links, but I summarise a few points of what has been revealed by studying the sound records from Perseverance microphones just in case the links die:

• Sound speed is lower than in Earth and it varies with frequency (240 m/s for low-pitched sounds and 250 m/s for higher-pitched sounds).
• Low-pitched sounds carry a shorter distance than in Earth. Higher-pitched sounds nearly don't carry any distance at all.
• Sound transmissibility and therefore sound levels vary with air pressure, which changes a lot with seasons. Low pressure seasons are quite silent.

Just an update to the existing answer now that NASA itself has published a summary in https://mars.nasa.gov/news/9158/what-sounds-captured-by-nasas-perseverance-rover-reveal-about-mars/ and a full Nature article in https://www.nature.com/articles/s41586-022-04679-0

You could better skip my answer and just read the report in the links, but I summarise a few points of what has been revealed by studying the sound records from Perseverance microphones just in case the links die:

• Sound speed is lower than in Earth and it varies with frequency (240 m/s for low-pitched sounds and 250 m/s for higher-pitched sounds).
• Low-pitched sounds carry a shorter distance than on Earth. Higher-pitched sounds nearly don't carry any distance at all.
• Sound transmissibility and therefore sound levels vary with air pressure, which changes a lot with seasons. Low pressure seasons are quite silent.

Just an update to the existing answer now that NASA itself has published a summary in https://mars.nasa.gov/news/9158/what-sounds-captured-by-nasas-perseverance-rover-reveal-about-mars/ and a full Nature article in https://www.nature.com/articles/s41586-022-04679-0

You could better skip my answer and just read the report in the links, but I summarise a few points of what has been revealed by studying the sound records from Ingenuity microphones just in case the links die:

• Sound speed is lower than in Earth and it varies with frequency (240 m/s for low-pitched sounds and 250 m/s for higher-pitched sounds).
• Low-pitched sounds carry a shorter distance than in Earth. Higher-pitched sounds nearly don't carry any distance at all.
• Sound transmissibility and therefore sound levels vary with air pressure, which changes a lot with seasons. Low pressure seasons are quite silent.

Just an update to the existing answer now that NASA itself has published a summary in https://mars.nasa.gov/news/9158/what-sounds-captured-by-nasas-perseverance-rover-reveal-about-mars/ and a full Nature article in https://www.nature.com/articles/s41586-022-04679-0

You could better skip my answer and just read the report in the links, but I summarise a few points of what has been revealed by studying the sound records from Perseverance microphones just in case the links die:

• Sound speed is lower than in Earth and it varies with frequency (240 m/s for low-pitched sounds and 250 m/s for higher-pitched sounds).
• Low-pitched sounds carry a shorter distance than in Earth. Higher-pitched sounds nearly don't carry any distance at all.
• Sound transmissibility and therefore sound levels vary with air pressure, which changes a lot with seasons. Low pressure seasons are quite silent.

Just an update to the existing answer now that NASA itself has published a summary in https://mars.nasa.gov/news/9158/what-sounds-captured-by-nasas-perseverance-rover-reveal-about-mars/ and a full Nature article in https://www.nature.com/articles/s41586-022-04679-0

You could better skip my answer and just read the report in the links, but I summarise a few points of what has been revealed by studying the sound records from Ingenuity microphones just in case the links die:

• Sound speed is lower than in Earth and it varies with speed (240 m/s for low-pitched sounds and 250 m/s for higher-pitched sounds).
• Low-pitched sounds carry a shorter distance than in Earth. Higher-pitched sounds nearly don't carry any distance at all.
• Sound transmissibility and therefore sound levels vary with air pressure, which changes a lot with seasons. Low pressure seasons are quite silent.

Just an update to the existing answer now that NASA itself has published a summary in https://mars.nasa.gov/news/9158/what-sounds-captured-by-nasas-perseverance-rover-reveal-about-mars/ and a full Nature article in https://www.nature.com/articles/s41586-022-04679-0

You could better skip my answer and just read the report in the links, but I summarise a few points of what has been revealed by studying the sound records from Ingenuity microphones just in case the links die:

• Sound speed is lower than in Earth and it varies with frequency (240 m/s for low-pitched sounds and 250 m/s for higher-pitched sounds).
• Low-pitched sounds carry a shorter distance than in Earth. Higher-pitched sounds nearly don't carry any distance at all.
• Sound transmissibility and therefore sound levels vary with air pressure, which changes a lot with seasons. Low pressure seasons are quite silent.