problem with speaker+bluetooth module

hello every one i am working in a project using a talking arduino with a speaker and a bluetooth module the code is here

String voix;
#include "talkie.h"
Talkie voice;
const int8_t spHELLO[]     PROGMEM ={0x00,0xC0,0x80,0x60,0x59,0x08,0x10,0x3D,0xB7,0x00,0x62,0x64,0x3D,0x55,0x4A,0x9E,0x66,0xDA,0xF6,0x56,0xB7,0x3A,0x55,0x76,0xDA,0xED,0x92,0x75,0x57,0xA3,0x88,0xA8,0xAB,0x02,0xB2,0xF4,0xAC,0x67,0x23,0x73,0xC6,0x2F,0x0C,0xF3,0xED,0x62,0xD7,0xAD,0x13,0xA5,0x46,0x8C,0x57,0xD7,0x21,0x0C,0x22,0x4F,0x93,0x4B,0x27,0x37,0xF0,0x51,0x69,0x98,0x9D,0xD4,0xC8,0xFB,0xB8,0x98,0xB9,0x56,0x23,0x2F,0x93,0xAA,0xE2,0x46,0x8C,0x52,0x57,0x66,0x2B,0x8C,0x07};
const int8_t spTHANK[]     PROGMEM = {0x08,0xC8,0xDC,0x15,0x01,0x4D,0xA8,0x10,0x60,0xF2,0x50,0x01,0x74,0x93,0x3A,0x9C,0xEA,0x5D,0x8B,0x27,0xF6,0x71,0x87,0x2A,0x2E,0xB7,0xC5,0xC7,0x1B,0x7E,0xB4,0xD4,0x26,0x9D,0xA8,0xA7,0xB2,0x94,0x0A,0xBD,0x92,0x5E,0x3C,0x42,0xCB,0xCC,0x68,0x9B,0x09,0xAD,0x54,0xDB,0x65,0xC8,0xC6,0x75,0xD1,0x92,0xF8,0xD1,0x8C,0xC9,0x98,0x17,0x59,0x1A,0x54,0x08,0xE5,0xEE,0x22,0xB2,0x01,0x08,0x50,0x7B,0x38,0x03,0x4A,0x08,0x16,0x40,0x89,0x46,0xFF,0x15,0x41,0x09,0x15};
const int8_t spYOU[]       PROGMEM ={0xA5,0xDA,0x0D,0x98,0x23,0x6F,0xF4,0x6A,0x55,0x33,0xA9,0x82,0xC6,0xEB,0x91,0xF5,0x68,0x02,0x11,0x5B,0x67,0x36,0x32,0x2B,0xA2,0x24,0x75,0x75,0xCF,0x7B,0xD5,0x9B,0xD6,0x5A,0x61,0xE5,0x49,0xDD,0x6A,0x97,0xFB,0xD8,0xFB,0x5E,0x77,0xA2,0xB3,0x2C,0x45,0x25,0x8D,0x3C,0x00,0x00};
const int8_t spAND[]       PROGMEM ={0xA1,0xC8,0xD3,0x4C,0xBC,0x22,0xCF,0x62,0xE4,0x65,0x99,0xB3,0x4E,0x9C,0x9B,0xCD,0xAC,0x65,0x65,0x78,0x32,0x77,0xE2,0x96,0x97,0x58,0x2A,0x66,0xB3,0x5B,0x95,0x53,0xB1,0x9A,0x4D,0x69,0x75,0x2A,0x69,0xA2,0x3A,0xA7,0x35,0x31,0x97,0x91,0xD9,0xAC,0xD4,0x25,0x5F,0x85,0x2E,0xB3,0x43,0xAF,0x83,0x9A,0x9A,0xD7,0x76,0xBD,0x0A,0x5C,0x62,0xE3,0xC0,0xF5,0x32,0x70,0x89,0x77,0x2C,0xD3,0x4B,0x47,0x6D,0x3A,0xB1,0xD4,0xA0,0x2D,0xAE,0xD9,0x44,0x92,0x23,0x9F,0xC2,0x54,0x94,0x8B,0x78,0x6C,0xD0,0xA3,0x18,0x52,0x4C,0x75,0xCD,0x5A,0x0F};
const int8_t spFINE[]      PROGMEM ={0x0C,0x30,0x56,0xDC,0x00,0xD1,0xA8,0x46,0x20,0x02,0x2B,0xB4,0x21,0xD6,0x39,0x93,0x9C,0xCC,0xB6,0x0E,0x93,0x4A,0x73,0xB3,0x9B,0xDD,0xFC,0x16,0xA7,0x8A,0xC3,0x4B,0x2C,0x92,0xDC,0xE6,0xB6,0xA7,0xCB,0x4D,0xC5,0x3D,0xA7,0xEC,0x6E,0xF7,0xA1,0x67,0xCE,0x32,0xA4,0x63,0xC4,0xDE,0xF7,0xBE,0xB7,0x83,0x1E,0xF8,0xF0};
const int8_t spAM[]        PROGMEM ={0xA3,0x28,0x4D,0xDD,0x64,0x15,0x9D,0xA2,0x34,0x0B,0xD5,0x4A,0x74,0xAA,0x3C,0x2D,0x44,0x2A,0xD5,0xAD,0x6E,0x75,0xAA,0xD4,0xB5,0x59,0x33,0xCE,0xAD,0x4F,0x1D,0x6B,0x94,0x9A,0x57,0xD9,0xED,0x68,0x6D,0xA9,0x56,0xC9,0xD8,0xAD,0x35,0x8E,0x4B,0xC5,0x54,0xFB,0xCE,0x77,0xA6,0xD3,0x8E,0x4A,0xC3,0xDD,0x98,0x4E,0x7A,0x49,0xE5,0x76,0xEA,0x3B,0xDD,0x3F,0x00,0x00};
const int8_t spI[]         PROGMEM = {0x2B,0x2B,0xA5,0x3A,0xCD,0x9B,0x9C,0xB4,0x9A,0x8B,0x08,0x5B,0xB4,0x92,0xE2,0xDF,0x3D,0xBD,0xE6,0x89,0x4B,0x7C,0xB7,0x88,0x98,0x27,0x2D,0xFE,0xC3,0x22,0x6A,0x9E,0xB4,0xF8,0x0F,0xF7,0x68,0x78,0xB2,0x6A,0x3E,0x23,0x6C,0xE5,0xA9,0x9B,0xBA,0x8C,0xD4,0xD6,0xA7,0x6E,0xFA,0x32,0x4A,0x57,0x9F,0xB1,0xF9,0x89,0x48,0x5B,0x73,0xA6,0x16,0xCB,0x33,0x6C,0xF1,0x5A,0x7B,0x0E,0x8F,0xB0,0xDA,0x63,0x6D,0x51,0x3C,0xB2,0x16,0xB7,0xAD,0x79,0xD5,0xEC,0x9A,0x53,0xB6,0x9E,0x44,0x62,0xBB,0x4E,0xDA,0xBA,0x63,0xCD,0x99,0xCA,0x69,0xED,0x8E,0x2C,0x27,0xE5,0xFC,0x19,0x41,0x71,0x51,0x19,0x19,0x49};

void Hello(){
   voice.say(spHELLO);
  }
void Thank(){
   voice.say(spTHANK);
   voice.say(spYOU);
  }
void Fine(){
  voice.say(spI);
  voice.say(spAM);
  voice.say(spFINE);
  voice.say(spTHANK);
  voice.say(spYOU);
  }

void setup() {
Serial.begin(9600);
}
void loop() {
while(Serial.available()) {
delay(10);
char c=Serial.read();
if(c=='#')
{break; }
voix += c;
}
if (voix.length() > 0) {
Serial.println(voix);
if(voix == "*hello" || "*hi"){Hello ();} 
if(voix =="*welcome"){Thank();}
if(voix =="*how are you"||"*are you fine"){Fine();}
}
voix="";

}

when i talk to the arduino from my phone the speaker say every thing for exemple if i say hello it says hello , thank , you and if i say any word (even if it is not execiting in the code it say those words what is wrong in the code can any one help me

if(voix == "*hello" || "*hi"){Hello ();}

Is not the correct way to use an or operation in an if statement.

if(voix == "*hello" || voix == "*hi"){Hello ();}

is the correct way to use the or operation.

However for String comparison see:-

https://www.arduino.cc/en/Reference.StringEquals