Table of Contents
- 9.1. Introduction
- 9.2. Functioning principals
- 9.3. Characteristics of a loudspeaker: Resonance frequency of a loudspeaker
- 9.4. Efficiency of a loudspeaker
- 9.4.1. Pneumatic suspension Loudspeakers
- 9.4.2. Acoustic horn Loudspeakers
- 9.5. Sensitivity of a loudspeaker and Maximum applicable power
- 9.5.1. Sensitivity of a loudspeaker
- 9.5.2. Maximum applicable power
- 9.6. Impedance of a loudspeaker
- 9.7. Frequency response
- 9.8. Polar pattern of a loudspeaker
- 9.9. Types of loudspeakers: subwoofer, woofer, midrange, tweeter
- 9.10. Piezoelectric Loudspeakers
- 9.11. Diffusers
- 9.11.1. The Crossover
- 9.12. Types of acoustic boxes
- 9.12.1. Bass reflex
- 9.12.2. Passive Cone
- 9.12.3. Retroactive Horn
Loudspeakers have the function of transforming electric signals transporting sound information, into acoustic waves. As we shall shortly see, their functioning principal is pretty straightforward. However, the construction of an acoustic diffuser [9 ] which returns sound with as few variations on the audible band as possible, is in fact a pretty complex job involving many theoretical and practical elements. In this section we will analyze the characteristics of loudspeakers and their usage in the construction of diffusors as well as the electrical and acoustic aspects involved. The kind of loudspeakers used in almost every case is the electrodynamic type, and thus, it is on this particular kind of loudspeaker that we shall be focusing our attention in the following sections.
[9 ] This term defines a composite system of loudspeakers each with different characteristics and each charged with the active role of reproducing a certain band of the audio signal.
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