Welcome User!
Sign In
Join Free
Sales :
+91-9953717914
|
Support :
+91-9700318318
For Buyer
Post Buy Requirement
Browse Suppliers
Manufacturers Directory
Country Suppliers
Buyer FAQ
For Seller
Sell Your Product
Latest Buyleads
Seller FAQ
Help
Send Feedback
Advertise with us
Contact Us
Sales
:
+91-9953717914
Support
:
+91-9700318318
Exporters India
Products / Services
Products / Services
Companies
Buy Leads
Search
Post Buy Requirement
Home
>
Ores and Minerals
>
Mineral Ores
>
Feldspar Minerals
>
Feldspar Minerals in Kadapa
Feldspar Minerals in Kadapa
(
73
Products Available )
Grid View
List View
Location
Near Me
All India
Kadapa
Nellore
Bangalore
Chennai
Guntur
Salem
Business Type
Manufacturer
Exporter
Wholesaler
Retailer
To List your Product
Boost Your Business Visibility Worldwide
Register Now
Feldspar, Color : White, Packaging Type : Packet
₹ 2.50 - ₹ 5
/ kg
MOQ :
20 Metric Ton
Supply Type :
Manufacturer
Packaging Type :
Packet
State :
Powdered
Feature :
Safe Packaging
More details...
Adinath Industries
Deals in Kadapa
Trusted
17 Years
4.3
/5
(30)
Feldspar
₹ 2.50 - ₹ 5 / kg
Get Quote
Potash Feldspar Powder
₹ 2,000 - ₹ 5,000 / ton
Get Quote
Feldspar Powder
₹ 2,000 - ₹ 6,000 / Ton
Get Quote
+1
Potash Feldspar Powder, Color : White, Packaging Type : Packet
₹ 2,000 - ₹ 5,000
/ ton
Packaging Type :
Packet
Brand Name :
Adinath
Supply Type :
Manufacturer
More details...
AI
Adinath Industries
Deals in Kadapa
Trusted
17 Years
4.3
/5
(30)
Feldspar Powder, Packaging Size : 25 Kg
₹ 2,000 - ₹ 6,000
/ Ton
Grade :
A
Application :
Steel Industry
Density :
2.5 g/cm3
Form :
Powder
Supply Type :
Manufacturer
Packaging Size :
25 Kg
Moisture :
0.3%
More details...
AI
Adinath Industries
Deals in Kadapa
Trusted
17 Years
4.3
/5
(30)
High Grade Feldspar Mineral For Industrial Applications
₹ 4,500 - ₹ 4,600
/ Ton
MOQ :
100 Ton
Silica :
SiO2 67.00 %
Origin :
India
Type :
Mineral
Alumina Al2O3 :
18.25 %
Material :
Feldspar
Application :
Industrial Applications
Shelf Life :
2 Year
More details...
Radhika Udyog
Deals in Kadapa
Verified
Platinum Plus
4 Years
High Grade Feldspar Mineral
₹ 4,500 - ₹ 4,600 / Ton
Get Quote
White Feldspar Powder
Get Best Deal
Get Quote
White Feldspar Powder, Purity : 99%, Particle Size : 200 - 400 Mesh
Get Price Quote
Moisture Content :
< 1%
Bulk Density :
1.5 - 1.8 G/cm³ Approx.
Whiteness :
High Brightness Suitable For Ceramics & Glazing
Form :
Powder
Melting Point :
1100 - 1500°C
Purity :
99%
Usage :
Tiles, Sanitary Ware, Glass, Paint, Rubber & Filler Applications
Origin Of Country :
India
Particle Size :
200 - 400 Mesh
Hardness :
Mohs 6 - 6.5 (high Wear Resistance)
More details...
RU
Radhika Udyog
Deals in Kadapa
Verified
Platinum Plus
4 Years
Potassium Feldspar Lumps, For Industrial, Feature : Durable, Striking Colours
Get Price Quote
Feature :
Durable, Striking Colours
Application :
Industrial
Surface Fnishing :
Rough-Rubbing
Form :
Lumps
Thickness :
10-20mm
More details...
SM
Shrinivasa Minerals
Pulivendula, Kadapa, Andhra Pradesh
Verified
14 Years
Potash Feldspar Powder, For Industrial, Color : White
Get Price Quote
MOQ :
100 Metric Ton
Country of Origin :
India
Application :
Industrial
State :
Powder
Whiteness :
80-90%
More details...
Shreenath Mining Works Private Limited
Deals in Kadapa
Trusted
13 Years
4.5
/5
(30)
Potash Feldspar Powder
Get Best Deal
Get Quote
Sodium Feldspar Powder
Get Best Deal
Get Quote
Sodium Feldspar
₹ 5,500 - ₹ 6,000 / Metric Ton
Get Quote
Sodium Feldspar Powder, For Industrial, Packaging Type : BOPP Bags
Get Price Quote
Application :
Industrial
Packaging Type :
BOPP Bags
Form :
Powder
Country of Origin :
India
Packaging Size :
25 Kg, 50 Kg
More details...
SM
Shreenath Mining Works Private Limited
Deals in Kadapa
Trusted
13 Years
4.5
/5
(30)
Sodium Feldspar, For Industrial, Packaging Size : 50 Kg
₹ 5,500 - ₹ 6,000
/ Metric Ton
Application :
Industrial
Whiteness :
40-50%
Specific Gravity :
2.6
State :
Lumps
Packaging Size :
50 Kg
More details...
SM
Shreenath Mining Works Private Limited
Deals in Kadapa
Trusted
13 Years
4.5
/5
(30)
High Melting Gvt Soda Feldspar Powder, Packaging Size : 25kg, Mesh Size : 200, Packaging Type : BOPP Bags
₹ 1,600 - ₹ 2,000
/ Ton
MOQ :
40 Ton
L VALUE :
50+
Powder Whiteness :
95%
Packaging Size :
25kg
Mesh Size :
200
Supply Type :
Manufacturer
Packaging Type :
BOPP Bags
Country of Origin :
India
More details...
Maa Bhagwati Enterprises
Deals in Kadapa
Verified
Platinum Plus
2 Years
High Melting Gvt Soda Feldspar Powder
₹ 1,600 - ₹ 2,000 / Ton
Get Quote
Soda Feldspar Powder
₹ 1,500 - ₹ 1,800 / Ton
Get Quote
White Soda Feldspar Lumps
₹ 400 - ₹ 600 / Ton
Get Quote
+1
Soda Feldspar Powder, Color : White, Packaging Type : BOPP Bags, Mesh Size : 200
₹ 1,500 - ₹ 1,800
/ Ton
Supply Type :
Manufacturer
Packaging Size :
25-50kg
Country of Origin :
India
Mesh Size :
200
Packaging Type :
BOPP Bags
Feature :
NA2O(7.5%+)
More details...
MB
Maa Bhagwati Enterprises
Deals in Kadapa
Verified
Platinum Plus
2 Years
White Soda Feldspar Lumps, Thickness : 150-200MM
₹ 400 - ₹ 600
/ Ton
Country of Origin :
India
Surface Fnishing :
Rough-Rubbing
Packaging Size :
25 Kg
Purity (%) :
99.2%
Supply Type :
Manufacturer
Stone Form :
Lumps
Feature :
Fine Finished
More details...
MB
Maa Bhagwati Enterprises
Deals in Kadapa
Verified
Platinum Plus
2 Years
Potash Feldspar Lumps, Color : Pink, Packaging Type : HDPE Bag
Get Price Quote
MOQ :
2 Ton
Packaging Type :
HDPE Bag
Stone Form :
Granite
Surface Fnishing :
Bush Hammered, Rough-Rubbing
Country of Origin :
India
Application :
Industrial Use
Chemical Composition :
K2O >10%
More details...
TM
The Mineral Station
Deals in Kadapa
Verified
Platinum
17 Years
4.4
/5
(30)
Potash Feldspar Lumps
Get Best Deal
Get Quote
Soda Feldspar Lumps
Get Best Deal
Get Quote
Soda Feldspar Lumps, Color : White, Packaging Type : BOPP Bags
Get Price Quote
Packaging Type :
BOPP Bags
State :
Lumps
Country of Origin :
India
Packaging Size :
25-50kg
Application :
Industrial Use
Surface Fnishing :
Rough-Rubbing, Bush Hammered
More details...
TM
The Mineral Station
Deals in Kadapa
Verified
Platinum
17 Years
4.4
/5
(30)
+2
Potash Feldspar Powder, For Industrial, Color : White
₹ 35
/ Kilogram
Particle Size :
200 mesh, 325 mesh
Whiteness :
80-90%
State :
Powder
Pack Type :
PP Bags
Application :
Industrial
More details...
Swapnil Minerals Export Co.
Deals in Kadapa
Trusted
7 Years
4.7
/5
(6)
Potash Feldspar Powder
₹ 35 / Kilogram
Get Quote
Sodium Feldspar Powder
₹ 24 / Kilogram
Get Quote
+2
Sodium Feldspar Powder, For Industrial, Packaging Type : Plastic Bags
₹ 24
/ Kilogram
Molar mass :
84.007 g/mol
Application :
Industrial
Packaging Type :
Plastic Bags
Whiteness :
50% Plus
Form :
Powder
More details...
SM
Swapnil Minerals Export Co.
Deals in Kadapa
Trusted
7 Years
4.7
/5
(6)
+1
Sodium Feldspar Lumps
Get Price Quote
Foam :
Lumps
Packaging Size :
50-100 Kg
Moq :
15 to 20 Metric Ton
Composition :
Fe2O3
More details...
Shree Charbhuja Exim
Deals in Kadapa
Trusted
4 Years
4.0
/5
(1)
Sodium Feldspar Lumps
Get Best Deal
Get Quote
Sodium Feldspar Powder
Get Best Deal
Get Quote
+5
Sodium Feldspar Powder, For Industrial, Packaging Type : BOPP Bags, Plastic Bags
Get Price Quote
Form :
Powder
Packaging Type :
BOPP Bags, Plastic Bags
Packaging Size :
25 Kg, 50 Kg
Application :
Industrial
Moq :
15-20 Metric Ton
More details...
SC
Shree Charbhuja Exim
Deals in Kadapa
Trusted
4 Years
4.0
/5
(1)
Save Your Time
Post your Buy Requirement
Get Quotes from Verified Suppliers
Product & Services
I am interested in
Potash Feldspar
Soda Feldspar
Feldspar Powder
Quantity
Unit
Describe your Requirement
Mobile Number
Email ID
Get Quotes Now
Potash Feldspar Powder For Industrial
Get Price Quote
Application :
industrial
Alumina(Al2O3) :
18%
Silica(SIO2) :
67%
Iron(Fe2O3) :
0.1%
Firing Whiteness :
54%
Potash(K2O) :
11.23%
Soda(Na2O) :
2.7%
More details...
Stone India International
Deals in Kadapa
Trusted
6 Years
5.0
/5
(1)
Potash Feldspar Powder
Get Best Deal
Get Quote
Soda Feldspar Powder
Get Best Deal
Get Quote
Soda Feldspar Powder For Industrial
Get Price Quote
Silica (SiO2) :
69%
Firing Whiteness :
67%
Application :
industrial
Alumina (Al2O3) :
19%
Potassium (K2O) :
0.25%
L Value :
80+
Sodium (Na2O) :
10.6%
Iron (Fe2O3) :
0.06%
More details...
SI
Stone India International
Deals in Kadapa
Trusted
6 Years
5.0
/5
(1)
High Purity Potash Feldspar Powder, Color : White, Purity : 99%
₹ 5,000 - ₹ 6,000
/ Metric Ton
MOQ :
25 Ton
Application :
Ceramics, Electrodes, Glass, Paints
Na₂O Content :
2-4%
Purity :
99%
Packaging Size :
50Kg
Moisture Content :
< 1%
Material :
Potash Feldspar
Supply Type :
Manufacturer
Packaging Type :
25 Kg / 50 Kg HDPE Bags Or As Required
K₂O Content :
10 to 12%
More details...
Shri Global Minerals Export
Deals in Kadapa
Trusted
1 Year
High Purity Potash Feldspar Powder
₹ 5,000 - ₹ 6,000 / Metric Ton
Get Quote
High Grade Potash Feldspar Lumps
₹ 3 - ₹ 4 / Kilogram
Get Quote
Soda Feldspar Powder
₹ 5 - ₹ 6 / Kg
Get Quote
Shri Potash Feldspar Lumps, Color : Pink, Packaging Type : Unpack
₹ 3 - ₹ 4
/ Kilogram
Brand :
Shri
Material :
Potash Feldspar
Supply Type :
Manufacturer
Na₂O Content :
2% - 3%
K₂O Content :
10% - 12%
Form :
Natural Lumps (Crushed, Cleaned, And Sorted)
Application :
Glass Manufacturing, Ceramic Tiles & Sanitaryware, Paints, Electrodes & Fluxes
SiO₂ Content :
65% - 70%
Packaging Type :
Loose Bulk / 50 Kg HDPE Bags / Jumbo Bags
Al₂O₃ Content :
16% - 18%
More details...
SG
Shri Global Minerals Export
Deals in Kadapa
Trusted
1 Year
Shri Soda Feldspar, Color : White For Ceramics
₹ 5 - ₹ 6
/ Kg
K₂O Content :
2% - 6%
SiO₂ Content :
65% - 70%
Supply Type :
Manufacturer
Form Available :
Powder / Lumps / Grains
Na₂O Content :
6% - 11%
Brand :
Shri
Application :
Glass & Bottle Manufacturing,Ceramics & Tiles,Paints,Electrodes,Fluxes,Sanitaryware
Material :
Soda Feldspar
Packaging Type :
50 Kg HDPE Bags / 1 Ton Jumbo Bags / Custom Packaging
Type :
Powder
More details...
SG
Shri Global Minerals Export
Deals in Kadapa
Trusted
1 Year
Potash Feldspar Powder, Packaging Type : White For Industrial
Get Price Quote
Supply Type :
Manufacturer
Packaging Type :
50 KG HDPE Laminated Bags,1250 KG Jumbo Bags
Number Of Flower :
Powder
Application :
Industrial
Material :
Potash Feldspar
More details...
Shri Vinayak Industries
Deals in Kadapa
Verified
18 Years
4.6
/5
(30)
Potash Feldspar Powder
Get Best Deal
Get Quote
Sodium Feldspar Powder
₹ 2,400 - ₹ 4,000 / Kilogram
Get Quote
Sodium Feldspar Powder, Packaging Type : White
₹ 2,400 - ₹ 4,000
/ Kilogram
Application :
Preparation Of Enamel And Glass
Feature :
Accurate Composition,Chemical Stability,Optimum Effectiveness,High Purity
Quality :
High Quality
Supply Type :
Manufacturer
Material :
Sodium Feldspar
More details...
SV
Shri Vinayak Industries
Deals in Kadapa
Verified
18 Years
4.6
/5
(30)
Soda Feldspar Powder, Packaging Type : PP Bag
₹ 1,800 - ₹ 2,500
/ Metric Ton
Packaging Type :
PP Bag
Grade :
B Grade
Chemical Formula :
SiO2
State :
Powder
Country of Origin :
Made in India
Supply Type :
Manufacturer
Application :
Ceramic & Glass Industry
More details...
Devshree Minerals And Alloys Pvt. Ltd.
Deals in Kadapa
Verified
Platinum Plus
12 Years
4.3
/5
(29)
Soda Feldspar Powder
₹ 1,800 - ₹ 2,500 / Metric Ton
Get Quote
Feldspar Powder
₹ 1,600 - ₹ 2,500 / Metric Ton
Get Quote
Feldspar Powder, Packaging Type : Plastic Bags
₹ 1,600 - ₹ 2,500
/ Metric Ton
Supply Type :
Manufacturer
Material :
Feldspar
Country of Origin :
India
Shape :
Natural
Application :
Industrial
Packaging Size :
50 Kg
Type :
Feldspar Powder
More details...
DM
Devshree Minerals And Alloys Pvt. Ltd.
Deals in Kadapa
Verified
Platinum Plus
12 Years
4.3
/5
(29)
Sodium Feldspar Lumps
Get Price Quote
MOQ :
25 Metric Ton
SiO2 % :
66% - 69%
Fe2 O3 % :
0.12-0.2.%
Moisture :
≤0.4%
Purity :
100.00%
Supply Type :
Manufacturer
Chemical Formula :
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
Country of Origin :
India
More details...
Vijay Chemical Company
Deals in Kadapa
Verified
Platinum
8 Years
4.1
/5
(9)
Sodium Feldspar Lumps
Get Best Deal
Get Quote
Sodium Feldspar Powder
Get Best Deal
Get Quote
Potash Feldspar Powder
Get Best Deal
Get Quote
Natural Sodium Feldspar Powder, For Cement, Ceramics, Packaging Size : 50 Kg
Get Price Quote
Type :
Sodium Feldspar Powder
Country of Origin :
India
Application :
Cement, Ceramics
Shape :
Natural
Supply Type :
Manufacturer
Form :
Powder
More details...
VC
Vijay Chemical Company
Deals in Kadapa
Verified
Platinum
8 Years
4.1
/5
(9)
Potash Feldspar Powder, Color : White
Get Price Quote
Grade : :
A Grade
Supply Type :
Manufacturer
Shape :
Natural
State :
Powder
Country of Origin :
India
More details...
VC
Vijay Chemical Company
Deals in Kadapa
Verified
Platinum
8 Years
4.1
/5
(9)
Soda Feldspar Powder, For Cement, Ceramics, Glass, Packaging Type : BOPP Bags, Plastic Bags
₹ 1,700
/ Metric Ton
Material :
Soda Feldspar
Packaging Size :
25 Kg, 50 Kg
Application :
Cement, Ceramics, Glass
Supply Type :
Manufacturer
State :
Powder
Packaging Type :
BOPP Bags, Plastic Bags
More details...
SM
Standard Minerals Processing Unit
Deals in Kadapa
Trusted
9 Years
4.8
/5
(9)
Soda Feldspar Powder
₹ 1,700 / Metric Ton
Get Quote
200 Mesh Soda Feldspar Powder
₹ 2,800 / Metric Ton
Get Quote
300 Mesh Soda Feldspar Powder
₹ 3,200 / Metric Ton
Get Quote
200 Mesh Soda Feldspar Powder, Packaging Type : Loose
₹ 2,800
/ Metric Ton
Packaging Type :
Loose
Size :
200 Mesh
Country of Origin :
India
Supply Type :
Manufacturer
State :
Powdered
More details...
SM
Standard Minerals Processing Unit
Deals in Kadapa
Trusted
9 Years
4.8
/5
(9)
300 Mesh Soda Feldspar Powder, Packaging Type : Loose
₹ 3,200
/ Metric Ton
Grade :
B Grade
Country of Origin :
India
State :
Powdered
Supply Type :
Manufacturer
Packaging Type :
Loose
More details...
SM
Standard Minerals Processing Unit
Deals in Kadapa
Trusted
9 Years
4.8
/5
(9)
Washed Soda Feldspar Powder, Color : White
₹ 3,500 - ₹ 5,000
/ Ton
MOQ :
25 Ton
Shrinkage :
11 to 14 %
LOI :
0.8 to 1.20 %
Country of Origin :
India
Moisture :
16 to 18 %
L Value :
80 to 86
More details...
Tulasi Minerals
Deals in Kadapa
Verified
2 Years
4.0
/5
(1)
Washed Soda Feldspar Powder
₹ 3,500 - ₹ 5,000 / Ton
Get Quote
Washed Potash Feldspar Powder
₹ 3,500 - ₹ 5,000 / Ton
Get Quote
+1
Washed Potash Feldspar Powder For Industrial
₹ 3,500 - ₹ 5,000
/ Ton
LOI :
0.8 to 1.20 %
L Value :
78 to 82
Shrinkage :
11 to 14 %
Application :
Industrial
Country of Origin :
India
Moisture :
16 to 18 %
More details...
TM
Tulasi Minerals
Deals in Kadapa
Verified
2 Years
4.0
/5
(1)
Potash Feldspar Lumps, For Cement, Ceramics, Glass, Feature : Antibacterial, Durable, Easy To Clean
Get Price Quote
Application :
Cement, Ceramics, Glass
Number Of Flower :
Potash Feldspar Lumps
Surface Fnishing :
Bush Hammered, Flamed, Non Polished, Pickling
Stone Form :
Granite, Slabs
Feature :
Antibacterial, Durable, Easy To Clean, Fine Finished, Non Slip, Perfect Shape
Shape :
Rectangle
More details...
Aaradhya Export And Import International
Deals in Kadapa
Verified
Platinum Plus
10 Years
4.3
/5
(11)
+3
Potash Feldspar Lumps, Color : Brown, Packaging Type : Loose
₹ 3,300
/ Metric Ton
MOQ :
35 tone
Packaging Type :
loose
Application :
Cement, Glass
Supply Type :
Manufacturer
Brand Name :
Goyal Group of Minerals
More details...
Shree B. S. Mining Co.
Deals in Kadapa
Verified
Platinum Plus
15 Years
4.5
/5
(30)
Potash Feldspar Lumps
₹ 3,300 / Metric Ton
Get Quote
Soft Soda Feldspar Raw Material
₹ 500 / Metric Ton
Get Quote
Soda Feldspar Crude
₹ 300 / Metric Ton
Get Quote
+5
Free Shape Soft Soda Feldspar Raw Material, For Ceramics, Size : India
₹ 500
/ Metric Ton
Stone Form :
White
L Value :
80% Min.
Size :
India
Feature :
White
Sio2 :
70% Approx.
Supply Type :
Manufacturer
Surface Fnishing :
White
Application :
Ceramics
Packaging Size :
White
Thickness :
Free Shape
More details...
SB
Shree B. S. Mining Co.
Deals in Kadapa
Verified
Platinum Plus
15 Years
4.5
/5
(30)
+5
Soda Feldspar Crude, Shape : Natural
₹ 300
/ Metric Ton
Powder Whiteness :
90%
Number Of Flower :
Soda Feldspar
Country of Origin :
India
Whiteness :
60%
B Value :
7% Approx.
Na2o :
7% Approx.
Supply Type :
Manufacturer
A Value :
00.26%
Stone Form :
Soda Feldspar
L Value :
80% Min.
More details...
SB
Shree B. S. Mining Co.
Deals in Kadapa
Verified
Platinum Plus
15 Years
4.5
/5
(30)
+2
Ambika Enterprises Natural Sodium Feldspar Grains, For Ceramic, Glass, Packaging Type : Plastic Bags
₹ 2,500 - ₹ 5,500
/ Ton
MOQ :
100 ton
Country of Origin :
India
Application :
Ceramic, Glass
Shape :
Natural
Packaging Type :
Plastic Bags
Stone Form :
Sodium Feldspar
Number Of Flower :
Sodium Feldspar
Capacity(t/h) :
1
Brand Name :
Ambika Enterprises
Packaging Size :
50 Kg, Jumbo bag
More details...
Ambika Enterprises
Deals in Kadapa
Trusted
8 Years
4.5
/5
(8)
Sodium Feldspar Grains
₹ 2,500 - ₹ 5,500 / Ton
Get Quote
Potash Feldspar Grits
₹ 2,500 - ₹ 5,500 / Ton
Get Quote
+4
Ambika Enterprises Rectangle Potash Feldspar Grits, For Ceramics, Glass, Packaging Type : Jumbo Bag
₹ 2,500 - ₹ 5,500
/ Ton
Country of Origin :
India
Brand Name :
Ambika Enterprises
Packaging Type :
Jumbo bag
Application :
Ceramics, Glass
Shape :
Rectangle, Round, Square
Type :
Potash feldspar grits
More details...
AE
Ambika Enterprises
Deals in Kadapa
Trusted
8 Years
4.5
/5
(8)
View More Results
Get Best Sellers for
Feldspar Minerals
I am interested in
Potash Feldspar
Soda Feldspar
Feldspar Powder
Quantity
Unit
Describe your Requirement
Mobile Number
Email ID
Submit Requirement
To List your Product
Boost Your Business Visibility Worldwide
Register Now
Save Your Time
Tell us your Buy Requirement
to Get Instant Response
Product & Services
I am interested in
Potash Feldspar
Soda Feldspar
Feldspar Powder
Quantity
Unit
Describe your Requirement
Mobile Number
Email ID
Get Quotes Now
This Data was Last Updated on 04/02/2026
Our Services
Advertise with us
Membership Plan
Banner Advertisement
Buyers
Post Your Requirement
Browse Suppliers
Manufacturers Directory
Country Suppliers
Buyer FAQ
Sellers
Sell Your Product
Latest Buyleads
Seller FAQ
Quick Links
About Us
Web Stories
Jobs & Careers
Contact Us
Feedback
Complaint
Testimonials
Disclaimer
Sitemap
LIVE
COVERAGE
Connect with us
Waiting for permission
To search by voice, go to your browser settings and allow access to microphone
Allow microphone access to search with voice