Stereo sound is superior to mono sound in almost all cases. It creates a richer and more detailed listening experience because more audio is recorded than in mono format and is presented in a more organic way. Unless some other superior form of sound recording is just around the corner, the stereo is definitely here to stay. In general, mono or stereo audio is not categorically better than the other.
Both types of audio serve a purpose. And both have features that can benefit your listening experience and your recordings if you know how and when to use them. Stereo is much better for the average listener. It sounds broader, more detailed and more realistic.
However, in places that have several speakers, such as clubs, cafes or restaurants, the stereo system can cause phase cancellation problems and therefore make the mono the right choice. The difference between monophonic (mono) and stereophonic (stereo) sound is the number of channels used to record and play audio. Mono signals are recorded and reproduced using a single audio channel, while stereo sounds are recorded and reproduced using two audio channels. As a listener, the most notable difference is that stereo sounds are capable of producing width perception, while mono sounds are not.
If you've ever observed the waveform of a stereo audio file on a digital audio workstation (DAW), you've probably noticed that there are two waveforms apart from the file. Mono playback systems use a speaker and can only produce a two-dimensional image composed of height and depth. In general, if a single source is recorded (especially in the case of a voice-over), the audio should be mono. This refers to mono audio that has only one audio signal that uses a single audio channel for playback or recording.
One way to find out is to open the audio file in a program like Audacity to check if the file has two waveforms (stereo) or just one (mono). Width (X-axis) is just one of the three dimensions you can perceive using a stereo system. The same signal can be reproduced through several speakers, but, since there will be no difference between them, it will not create a wide stereophonic effect, it will only make everything louder. The following Steven Law video contains a consecutive comparison of a mono guitar recording and a stereo guitar recording.
Bands used to sign a mono or stereo version of the album with engineers before its release. Hear the differences between the mono and stereo versions of Lucy In The Sky With Diamonds from The Beatles' seminal 1967 album, Sgt. Mono (also known as monaural or monophonic sound) refers to the number of channels involved, either an input or an output. A mono recording can be played from one speaker, but it can also be played from two speakers, five speakers, or any number of speakers and is still considered mono.
You record a singer in mono because you have nothing to record that makes the difference between the left and right channels. From the listener's perspective, the most notable difference is that mono signals cannot create a wide perception. And even if the Bluetooth speaker is stereo, you'll notice it as mono when the sound reaches your ears. Therefore, a song that plays in mono will be reduced and will sound as if it came from between the speakers.