The three elements that cause differences in sound quality: volume, pitch, and timbre.
Expand your knowledge:
Volume refers to the strength and amplitude of the audio, which is commonly referred to as the size of the sound. We can adjust the volume of the phone or headset according to their own habits, so this is not a big impact on the sound quality, not the volume of the higher the sound quality is better, or else the square dancing lady's speakers can directly "kill the whole field".
Pitch is the pitch of the sound, i.e. the frequency of the audio or the number of changes per second. This also has little effect on the sound quality of the device. For example, if we listen to the same song on our speakers and cell phones, it won't produce any change in pitch, because it's impossible to change the playback device the song is out of tune, unless you're listening to a remixed version or the device's system is really bad.
Tone refers to the distinctive characteristics of the waveforms in which different sounds manifest themselves, and different objects vibrate with different characteristics. Even at the same volume and pitch, as long as the sounding object is different, then the timbre of the sound will be different. For example, if you play the same song on a piano and a guitar, it's obvious that you can hear the difference, because different instruments have their own timbre.
The timbre is made up of two main components: harmonics and fundamental frequency. In the strictest sense, harmonics are the amount of electricity contained in the current that has a frequency that is an integer multiple of the fundamental, and any factor that affects harmonics affects the tone, such as voltage and current.
And the fundamental frequency is the lowest oscillating frequency of a freely oscillating system, the lowest frequency in a compound wave. The fundamental frequency is the most expensive semiconductor component in most cell phones, and it also determines the choice of cell phone platform, which largely determines the phone's features and performance.
Introduction to sound quality:
Sound quality refers to the embodiment of sound in audio technology, which encompasses three aspects: volume, pitch, and timbre. The volume of the sound, i.e., the intensity and amplitude of the audio; the pitch of the sound, also known as the pitch, i.e., the frequency of the audio or the number of changes per second; and the timbre of the sound, i.e., the audio overtones.
And in talking about the sound quality of a certain audio, the main measure of the sound of the above three aspects of a certain level, that is, relative to the pitch of a certain frequency or band of sound has a certain intensity, and in the required frequency range, while in the same volume.
Whether the amplitude of each frequency point is uniform, balanced and full, whether the frequency response curve is straight, whether the pitch of the sound is accurate, not only the true presentation of the source frequency or composition of the original face, frequency distortion and phase shift and meet the requirements.
If the overtones of the sound are harmonized, it sounds beautiful and melodious, and then the value of its sound quality is determined by the actual bit rate.