 Data files using lossy compression are smaller in size and thus cost less to store and to transmit over the Internet, a crucial consideration for streaming video services such as Netflix and streaming audio services such as Spotify.A study conducted by the Audio Engineering Library concluded that lossy compression formats such as MP3s have distinct effects on timbral and emotional characteristics, tending to strengthen negative emotional qualities and weaken positive ones.The study further noted that the trumpet is the instrument most affected by compression, while the horn is least.