import time

chat_id = 25
count   = 10
delay   = 1

self.bot.send_message (chat_id, "Мужицъкое лог0во произноситъ рѣчь...")
for i in range (count):
    self.bot.vk.method ('messages.setActivity', {'peer_id': 2000000000 + chat_id, 'type': 'audiomessage'})
    time.sleep (delay)