cpu useage in linux terminal with cpu device

[zhufeijuanjuan]

Great work. I test piper-tts on my terminal device, the voice sounds good. But I met a critical issue was that the cpu usage was nearly 100% when running piper-tts on one cpu core. Furthermore, I found that when i ony run espeak-ng or piper-phonmizer, the cpu usage was still nearly 100%. Have you meet similar issue before. Hope to get some suggestion to low cpu usage. Thanks very much.