| 摘要 |
In some embodiments, portable speakers can be small and lightweight and can communicate with one or more audio device over wired or wireless connections. In some embodiments, portable speakers achieve reduced complexity as compared to typical high fidelity systems (e.g., by including a reduced number of speaker drivers and amplifiers), while still maintaining high fidelity stereo audio playback, thereby achieving both portability and high quality audio capability. For instance, certain implementations of the speaker include two primary speakers disposed on opposing faces of the speaker enclosure (e.g., full or mid-range drivers) and two tweeters, also disposed on opposing faces. Primary speakers can be disposed on respective ends of the housing and each can output a different stereo channel. Each tweeter can be positioned on different face of the housing. The speaker system according to some embodiments generates a mono high frequency signal to drive the tweeters. |
| 主权项 |
1. A portable speaker system comprising:
a housing comprising first and second opposing ends, a bottom side, and first and second opposing sides, the first and second ends defining a width of the housing, the bottom, first, and second sides each extending along a length of the housing between the first end and the second end to define a speaker enclosure, the length greater than the width; first and second tweeters supported by the housing, the first tweeter arranged on the first side and the second tweeter arranged on the second side, opposing the first tweeter; first and second primary speakers supported by the housing, the first primary speaker arranged on the first end and the second primary speaker arranged on the second end, opposing the first primary speaker; an input interface configured to receive a stereo audio signal from an audio source, the stereo audio signal comprising left and right channels; and audio mixing electronics disposed within the speaker enclosure and configured to receive the stereo audio signal from the input interface, the audio mixing electronics comprising:
a mixer stage configured to:
process the stereo audio signal to obtain a high frequency stereo component and a lower frequency stereo component; andobtain a mono component by combining left and right channels of the high frequency stereo component; anda driver stage comprising one or more audio amplifier circuits, the driver stage configured to:
output at least the mono component to the first and second tweeters and at least the lower frequency stereo component to the first and second primary speakers,such that the first primary speaker outputs a left channel of the lower frequency stereo component, the second primary speaker outputs the right channel of the lower frequency stereo component, and the first and second tweeters both output the mono component. |
