Cold
The term cold, similar to warmth, describes a coloration of the sound. Unlike warmth, a cold sound places its emphasis on the upper registers of the sound spectrum ie. the upper midrange to treble areas. This produces a sound which although can be somewhat lacking in midrange presence and body, provides a better degree of clarity, details and energy compared to a warm sound.
Sibilance
The term sibilance is associated with the hissing noise usually present in the forms of ss or sh-like sounds. This detrimental effect can be caused by several factors namely the recording process, recording quality, improper compression method, and lastly our equipment themselves. Certain headphones have the unwanted effect of accentuating sibilance.
Warm
A sound characteristic, warm is the opposite of cold. Both warm or cold describe a coloration to the otherwise neutral or uncolored sound. This term describes a sound which is colored to the lower region of the sound spectrum ie. the midrange and the bass. A warm sound generally tends to have weighty midrange and bass, lending an overall smooth and relaxing experience.
