> Technically there are two complementary sets of dimensions: time and amplitude vs frequency and phase. Both are complete encodings of the waveform.
Minor note, the "frequency and phase" is actually frequency and complex amplitude, which encompasses both phase and scalar amplitude as we think of it intuitively.
In the mathematical theory there is also provision for complex amplitude in the time-domain, but this is rarely needed in practice (and never found in real-world signals).
Minor note, the "frequency and phase" is actually frequency and complex amplitude, which encompasses both phase and scalar amplitude as we think of it intuitively.
In the mathematical theory there is also provision for complex amplitude in the time-domain, but this is rarely needed in practice (and never found in real-world signals).