Electric Buses and Sound Quality
Issue Four
Throughout this whitepaper series, we will look at why noise control is still an integral aspect of the development of electric bus models. Issue four focuses specifically on the sound quality techniques and metrics used in the assessment of tonal electric vehicle noises.
Sound quality defines the distinctive character of a sound other than its pitch or loudness.
This whitepaper will discuss:
- Electric vehicles, internal combustion engine (ICE) powertrains and emitted noise
- Electric vehicle noise measurement techniques
- Sound quality assessment methods
- Quantifying noise and sound quality of electric vehicles
- Electric bus case study
Prominent Ratio Sound Quality
The whitepaper discusses a case study example of the implementation of the Prominent Ratio sound quality metric in the analysis of noise from an electric bus carried out by Ventac. In the interest of subjective assessment, digital recordings of this noise data (Figure 1 in whitepaper) with its prominent tone and a copy with the prominent tone diminished can be listened to below
Sound Data with Prominent Tone
Sound Data without Prominent Tone
Please ensure your speakers are turned on to listen to the tests.
